Physics Chapter on Train Motion and Velocity

True (A)

6 m/s to the right

<p>5</p> Signup and view all the answers

<p>0 s = 6 m/s to the right 10 s = 10 m/s to the right 30 s = 5 m/s to the left 45 s = 10 m/s to the left</p> Signup and view all the answers

<p>Level 4 (Genius) (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>To measure physical movement.</p> Signup and view all the answers

<p>labquest mini</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>Level 1 (Novice) = Match the graph while watching the screen Level 2 (Intermediate) = Have a partner give verbal instructions Level 3 (Expert) = Use notes to match the graph Level 4 (Genius) = Combine all previous methods with velocity graphs</p> Signup and view all the answers

<p>To analyze and interpret movement patterns.</p> Signup and view all the answers

<p>Graph Match</p> Signup and view all the answers

<p>Sammy walks quickly, gradually slows down, stops and turns around. (B)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>a = ∆v / ∆t</p> Signup and view all the answers

<p>slows down</p> Signup and view all the answers

<p>Speeding up = Increasing velocity over time Constant speed = Maintaining the same speed Slowing down = Decreasing velocity over time Turning around = Changing direction while adjusting speed</p> Signup and view all the answers

<p>Force (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The resultant force is the sum of all the forces acting on an object.</p> Signup and view all the answers

<p>N</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>Resultant Force = The total force acting on an object Magnitude = The size of a force Force Diagram = A visual representation of forces acting on an object Vector = A quantity having magnitude and direction</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Forces can cause an object to accelerate, decelerate, or change direction.</p> Signup and view all the answers

<p>0 N (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The object accelerates, decelerates, or changes direction.</p> Signup and view all the answers

<p>first</p> Signup and view all the answers

<p>Gravity and air resistance (C)</p> Signup and view all the answers

<p>The resultant force is 45 N forwards.</p> Signup and view all the answers

<p>First Law = Object remains at rest or moves at constant speed unless acted on by a force Second Law = Force equals mass times acceleration Third Law = For every action, there is an equal and opposite reaction Law of Gravitation = All masses attract each other with a force directly proportional to their mass</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Lee experiences an equal and opposite push. (A)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>terminal velocity</p> Signup and view all the answers

<p>larger</p> Signup and view all the answers

<p>Gravitational force = Causes downward acceleration Air resistance = Opposes motion when falling Push from Melanie = Causes Lee to accelerate backwards Parachute deployment = Increases drag and slows descent</p> Signup and view all the answers

<p>The skateboarder slows down. (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>By changing their body position, skydivers can manipulate air resistance to steer.</p> Signup and view all the answers

10 m/s to the right

6 m/s to the right

5 m/s to the right

0 m/s

5 m/s to the left

Acceleration is the rate of change of velocity over time.

An object moving at a constant speed maintains a steady rate without changing.

An object's speed increases over time.

An object's speed decreases over time.

A graph showing how velocity changes over time.

Using graphs to represent motion (like position, velocity, acceleration).

Shows how an object's position changes over time.

Shows how an object's speed and direction change over time.

Device that detects and measures movement.

Software for analyzing data from motion sensors, mainly through charts.

Different difficulty levels to match motion graphs using sensors (e.g., Novice to Genius).

Speed in a specific direction.

The process of creating or identifying a graph that accurately reflects movement data.

The sum of all forces acting on an object.

An external push or pull on an object.

A diagram showing forces acting on an object.

A quantity with both magnitude and direction. (Force is a vector)

Shows the position of an object versus time.

Motion that is not constant, like speeding up or slowing down.

Forces are responsible for changing the motion of an object.

For every action, there is an equal and opposite reaction.

Force is directly proportional to acceleration, meaning a larger force results in a greater acceleration for a given mass.

Acceleration is inversely proportional to mass, meaning a larger mass results in a smaller acceleration for a given force.

The constant speed that a freely falling object eventually reaches when the force of air resistance equals the force of gravity.

A parachute increases the surface area of the skydiver, which creates more air resistance, slowing the falling speed to a safer landing.

Skydivers can change their body position to manipulate air resistance, allowing them to maneuver and change directions in the air.

Kinetic energy is the energy of motion, while potential energy is the stored energy of position.

Energy cannot be created or destroyed, only transformed from one form to another.

Forces acting on an object that cancel each other out, resulting in no net force.

Forces acting on an object that do not cancel each other out, resulting in a net force.

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

A skydiver experiences forces of gravity pulling them down and air resistance pushing them upward. As the skydiver falls, air resistance increases until it balances gravity.

A skydiver initially accelerates rapidly due to gravity. As air resistance grows, acceleration decreases until the skydiver reaches terminal velocity, where speed remains constant.

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.