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Questions and Answers
What is the formula to calculate weight?
What is the formula to calculate weight?
Mass changes based on the gravitational pull of a planet.
Mass changes based on the gravitational pull of a planet.
False
What happens to an object if the resultant force and the motion are in the opposite direction?
What happens to an object if the resultant force and the motion are in the opposite direction?
The object will decelerate.
The resultant force acting on the object is calculated by adding forces that act in the same direction and __________ forces that act in opposite directions.
The resultant force acting on the object is calculated by adding forces that act in the same direction and __________ forces that act in opposite directions.
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Match the following terms with their definitions:
Match the following terms with their definitions:
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If a BMX cyclist completes 1 km in 50 seconds, what is her speed?
If a BMX cyclist completes 1 km in 50 seconds, what is her speed?
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The moon orbits the Earth at a constant speed and constant velocity.
The moon orbits the Earth at a constant speed and constant velocity.
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What is the resultant force when a 500N force is acting in the opposite direction to a 200N force?
What is the resultant force when a 500N force is acting in the opposite direction to a 200N force?
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Which piece of equipment is essential for measuring the length of the spring during the experiment?
Which piece of equipment is essential for measuring the length of the spring during the experiment?
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The extension of a spring is defined as the original length of the spring minus the stretched length.
The extension of a spring is defined as the original length of the spring minus the stretched length.
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What should be worn for safety during the experiment to protect against springs 'pinging' off?
What should be worn for safety during the experiment to protect against springs 'pinging' off?
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A mass of 100g corresponds to a weight of __N.
A mass of 100g corresponds to a weight of __N.
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Match the following springs with their properties:
Match the following springs with their properties:
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What graph relationship indicates that the spring is behaving normally, according to the experiment?
What graph relationship indicates that the spring is behaving normally, according to the experiment?
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What is the significance of wearing eye protection during the spring experiment?
What is the significance of wearing eye protection during the spring experiment?
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The extension of a spring is directly proportional to the applied force until the limit of proportionality, which is quantified in units of __.
The extension of a spring is directly proportional to the applied force until the limit of proportionality, which is quantified in units of __.
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What is the primary difference between speed and velocity?
What is the primary difference between speed and velocity?
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Velocity can be negative depending on the direction of the movement.
Velocity can be negative depending on the direction of the movement.
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What is the formula to calculate average speed?
What is the formula to calculate average speed?
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The centre of mass of an object is the point where the weight of the object can be considered to act at a single ______.
The centre of mass of an object is the point where the weight of the object can be considered to act at a single ______.
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Match the type of graph with its corresponding description:
Match the type of graph with its corresponding description:
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If a train moves to the left at -25 m/s, what does this indicate about its velocity?
If a train moves to the left at -25 m/s, what does this indicate about its velocity?
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The gradient of a distance-time graph represents the average speed of an object.
The gradient of a distance-time graph represents the average speed of an object.
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Calculate the average speed if a person travels 150 meters in 30 seconds.
Calculate the average speed if a person travels 150 meters in 30 seconds.
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What does the spring constant 'k' represent?
What does the spring constant 'k' represent?
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A force can only change the speed of an object.
A force can only change the speed of an object.
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If a spring is stretched from 0.36m to 0.42m by a force of 2N, what is the extension of the spring?
If a spring is stretched from 0.36m to 0.42m by a force of 2N, what is the extension of the spring?
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The formula linking the force (F), spring constant (k), and extension (e) is ___.
The formula linking the force (F), spring constant (k), and extension (e) is ___.
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Match each scenario with its possible outcome:
Match each scenario with its possible outcome:
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Which of the following describes the limit of proportionality?
Which of the following describes the limit of proportionality?
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Compression can also produce an extension in materials.
Compression can also produce an extension in materials.
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Calculate the spring constant k if a force of 5N produces an extension of 0.1m.
Calculate the spring constant k if a force of 5N produces an extension of 0.1m.
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What is the equation used to calculate acceleration?
What is the equation used to calculate acceleration?
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A velocity-time graph can be used to calculate the distance travelled by an object.
A velocity-time graph can be used to calculate the distance travelled by an object.
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What is the acceleration of the motorbike during the first 10 seconds?
What is the acceleration of the motorbike during the first 10 seconds?
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The distance travelled by an object moving at a constant velocity is calculated using the equation distance = ____ x time.
The distance travelled by an object moving at a constant velocity is calculated using the equation distance = ____ x time.
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During which time period does the motorbike travel at its highest velocity?
During which time period does the motorbike travel at its highest velocity?
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The gradient of a velocity-time graph represents distance travelled.
The gradient of a velocity-time graph represents distance travelled.
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How long does the motorbike travel at a constant velocity?
How long does the motorbike travel at a constant velocity?
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What happens to the acceleration of the car as time progresses?
What happens to the acceleration of the car as time progresses?
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The net forward force on the car increases as its speed increases.
The net forward force on the car increases as its speed increases.
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What is the formula for calculating the moment?
What is the formula for calculating the moment?
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The mass of the car is __________ kg.
The mass of the car is __________ kg.
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Match the following forces with their corresponding moments:
Match the following forces with their corresponding moments:
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How can a moment be increased without moving the applied load?
How can a moment be increased without moving the applied load?
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What force is required to turn a rusted bolt requiring a turning effect of 120 Nm from a distance of 0.4m?
What force is required to turn a rusted bolt requiring a turning effect of 120 Nm from a distance of 0.4m?
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If something is balanced, the sum of the clockwise moments is equal to the sum of the __________ moments.
If something is balanced, the sum of the clockwise moments is equal to the sum of the __________ moments.
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Study Notes
Vector and Scalar Quantities
- Some measurements have both direction and magnitude (vector).
- Some measurements have only magnitude (scalar).
- Temperature (21℃) is a scalar quantity.
- Force is a vector quantity.
- Time is a scalar quantity.
- Pressure is a vector quantity.
- Light is a scalar quantity.
Distance and Displacement
- Distance is the total length of the path travelled.
- Displacement is the shortest distance between the starting and ending points, including direction.
- Distance is a scalar quantity.
- Displacement is a vector quantity.
Forces
- Force is a push or pull that acts on an object.
- Force is measured in Newtons.
- Contact forces require physical touch (e.g., friction, air resistance, thrust, normal contact force, tension, compression lift).
- Non-contact forces act at a distance (e.g., gravity, magnetic, electrostatic, strong nuclear, weak nuclear).
- Resultant force is the overall force when all forces acting on an object are considered.
Resolution of Forces
- Calculating horizontal and vertical components of a force at an angle (use trigonometry).
- Use scale diagrams.
- Calculate the resultant force, given two forces at an angle (using parallelograms).
Force and Extension
- Force applied to a spring causes extension.
- Extension is directly proportional to the applied force up to the limit of proportionality.
- Spring constant (k) relates force and extension (F = k x e).
- Use the gradient of a force–extension graph to determine the spring constant.
- Identify the limit of proportionality.
- The spring constant is the gradient of the graph.
Acceleration
- Acceleration is the rate of change of velocity.
- Acceleration (m/s²) = change in velocity (m/s) / change in time (s).
- Calculate final velocity given initial velocity, acceleration, time.
Speed and Velocity
- Speed is the rate of change of distance (scalar).
- Velocity is the rate of change of displacement (vector).
- Average speed = total distance / total time.
- Average velocity = total displacement / total time.
- Calculate average speed and velocity in specific scenarios.
Distance-Time Graphs
- The gradient of a distance-time graph gives the speed.
- A horizontal line represents constant speed.
- Identify the characteristics of a distance-time graph.
Velocity-Time Graphs
- The gradient of a velocity-time graph gives the acceleration.
- An area under a velocity-time graph is the distance travelled.
- Identify the characteristics of a velocity-time graph
Atomic Structure Timeline
- Democritus (450 BC) first suggested the existence of atoms.
- Dalton (1803) proposed a model of atoms as solid spheres.
- JJ Thompson (1897) suggested the plum pudding model.
- Rutherford (1909) proposed the nuclear model based on the alpha-scattering experiment.
- Bohr (1913) refined the nuclear model adding electron shells.
- Chadwick (1932) discovered the neutron.
Moments
- A moment is a turning effect of a force.
- Moment = force × perpendicular distance from pivot.
- Calculate moments and use moments to determine the resultant moment and the state of equilibrium.
- Centre of gravity (COG) is the point where the whole weight of an object can be considered to act.
- Use the principle of moments to calculate the unknown weights or distances or forces involved.
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Description
This quiz explores the concepts of vector and scalar quantities in physics, along with an examination of distance versus displacement. Additionally, it covers the fundamental aspects of forces, including contact and non-contact forces. Test your understanding of these crucial concepts in physics!
