Physics: Distance, Displacement, and Force
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Questions and Answers

Imagine that you have a chance of going on a trip during your school ______.

vacation

What is the total length of the path of a motion called?

Distance

What is the linear length between the starting and ending positions of a motion called?

Displacement

The displacement of a runner in the 400 meter race would be 400 meters.

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

What is the standard unit of measuring force?

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

What is the unit of measuring both 'distance' and 'displacement'?

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

Which of the following is NOT an example of applying force?

<p>Reading a book (B)</p> Signup and view all the answers

The speed of an object can be changed by applying a force.

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

The direction of an object's motion can be changed by applying a force.

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

Which of the following is the correct statement about force?

<p>Pulling and pushing can be done by applying a force (A)</p> Signup and view all the answers

Flashcards

Distance

The total length of the path travelled by an object during its motion.

Displacement

The straight-line length between the starting and ending points of an object's motion. It always has a direction.

Force

A push or pull that can change the motion, speed, direction, or shape of an object.

Newton (N)

The standard unit of measurement for force, named after Sir Isaac Newton.

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Weight

The force exerted by Earth on an object due to gravity. It's what pulls us towards the ground.

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Mass

The amount of matter in an object, which is constant regardless of its location.

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Motion

The change in position of an object over time.

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Speed

The rate at which an object changes its position; it's how fast or slow something is moving.

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Direction

The direction of motion of an object. It tells us which way something is moving.

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Change in motion

A change in an object's speed or direction of motion. It's a change in how things move.

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Rotation or turning effect

The turning effect produced by a force applied to an object. It makes things rotate.

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Shape change

A change in the shape of an object caused by a force. It can be temporary or permanent.

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Energy

The ability to do work or cause change. It's the potential to make things happen.

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Potential energy

Energy stored in an object due to its position or state. Think of a stretched rubber band or raised weight.

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Kinetic energy

Energy possessed by an object due to its motion. Think of a moving car or falling object.

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Energy transfer or transformation

The transfer of energy from one object to another or the transformation of energy from one form to another.

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Gravity

The force that attracts all objects with mass towards each other. It's what keeps us on the ground.

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Friction

A force that opposes the motion of an object. Think of friction between a car's tires and the road.

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Inertia

A measure of how difficult it is to change the velocity of an object. It's a resistance to change in motion.

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Centripetal force

A force that acts on an object in a circular path, keeping it from moving in a straight line. Think of a spinning ball on a string.

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Sliding friction

A force that occurs when two surfaces slide past each other. Think of rubbing your hands together.

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Rolling friction

A force that occurs when an object rolls over another surface. Think of a rolling ball or a car tire.

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Fluid friction

A force that occurs when an object moves through a fluid, such as air or water. Think of a plane flying or a fish swimming.

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Air resistance

A force that opposes the motion of an object through a fluid, such as air. Think of air resistance slowing down a plane.

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Rest

A state where an object is not moving or changing its position. Think of a book sitting on a table.

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Motion

A state where an object is constantly changing its position. Think of a car driving down the road.

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Pulling

The action of pulling on an object. Think of pulling a rope or a door open.

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Pushing

The action of pushing on an object. Think of pushing a cart or a door closed.

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Force applicator

An object, such as a rope or chain, used to apply force to another object. Think of using a rope to pull a car.

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Study Notes

Distance and Displacement

  • Distance is the total length of the path traveled.
  • Displacement is the shortest distance between the starting and ending points of a motion. It has a direction.
  • The straight-line distance between two locations is always less than the total distance traveled along a path.
  • Distance is a scalar quantity (only magnitude), while displacement is a vector quantity (magnitude and direction).

Force

  • A force is a push or a pull.
  • Force has a magnitude and a direction.
  • The SI unit of force is the newton (N).
  • Forces can change the motion of an object (speed, direction, or both).

Activities

  • Activities are provided in the text to demonstrate how to measure distance, calculate displacement, and identify forces.
  • These activities include using maps, measuring with threads, applying forces and observing the effects.

Units of Measurement

  • The text discusses the international units for distance and force, which are metres (m) and newtons (N), respectively.
  • Other units for length like millimeters, centimeters, and kilometers, are also mentioned.

Motion

  • The text explains how forces can affect the speed of objects and change the direction of motion.
  • Applications of forces include moving objects that were initially at rest, changing the speed of objects, and changing their direction of motion.

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Related Documents

EG7_Sci_Chap16 PDF - Force and Motion

Description

This quiz covers key concepts in physics related to distance, displacement, and force. It highlights the differences between distance and displacement, as well as the definition and role of force in motion. Engage with activities designed to deepen your understanding of these fundamental topics.

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