Create a Quiz. The academic subject for which the text must be created - Physics. Content must be appropriate for Year or Grade 8. Required ...
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Which subjectPhysics
What age groupYear or Grade 8
What topicNewton's laws of motion
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Number of questions20
Number of answers4
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Quiz on Newton's Laws of Motion for Grade 8

Instructions

Answer the questions based on your understanding of Newton's laws of motion. Some questions will provide multiple-choice answers, while others will require you to provide explanations or calculations.

Questions

  1. The image of a car accelerating down a straight highway.
    What law of motion is represented by the car's ability to change its speed when the gas pedal is pressed?

  2. The image of a soccer ball being kicked on a field.
    Which of the following best describes the action-reaction pair when a soccer player kicks a ball?
    A. The ball moves forward.
    B. The player's foot applies a force on the ball, and the ball applies an equal force back on the foot.
    C. The player pushes against the ground.
    D. The ball spins in the air.

  3. The image of a person standing still with a heavy backpack on their back.
    Which law of motion is illustrated if the person does not move even when the backpack is heavy?

  4. The image of a hockey puck sliding on ice.
    What force causes the puck to eventually slow down and stop?
    A. Gravity
    B. Friction
    C. Air resistance
    D. Magnetism

  5. The image of two objects of different weights being dropped from the same height.
    According to Newton's second law, how will their acceleration compare when dropped in a vacuum?

  6. The image of a rocket blasting off.
    Which law of motion is best demonstrated by the action of the rocket pushing down on the ground and the reaction of the rocket moving upward?
    A. First Law
    B. Second Law
    C. Third Law
    D. Law of Universal Gravitation

  7. The image of a skateboarder sliding to a halt on a rough surface.
    What force is primarily responsible for slowing the skateboarder down?
    A. Gravity
    B. Friction
    C. Normal force
    D. Inertia

  8. The image of a basketball thrown into the air.
    Describe how Newton's first law applies when the basketball reaches the peak of its throw.

  9. The image of a child pushing a shopping cart full of groceries.
    What happens to the acceleration of the cart when the child increases their force applied to it?
    A. The acceleration increases.
    B. The acceleration decreases.
    C. The cart stops moving.
    D. The acceleration remains constant.

  10. The image of a train moving at a constant speed on tracks.
    What can we conclude about the net force acting on the train?

  11. The image of a person pulling a suitcase with a constant speed.
    If the person pulls with a force of 50 N and the suitcase has a frictional force of 50 N acting against it, what is the net force?

  12. The image of an apple hanging from a tree.
    Which of Newton’s laws would help us understand why the apple eventually falls?
    A. First Law
    B. Second Law
    C. Third Law
    D. None of the above

  13. The image of a child in a car during hard braking.
    What will happen to the child if not wearing a seatbelt? Explain using Newton's first law.

  14. The image of a baseball bat hitting a baseball.
    Identify the action-reaction pair in this scenario.

  15. The image of a bicycle in motion.
    According to Newton's second law, which statement is correct if the rider increases pedaling force?
    A. The bicycle must slow down.
    B. The bicycle will speed up.
    C. The bicycle will stop.
    D. The bicycle will continue at the same speed.

  16. The image of a toy car rolling down a ramp.
    Which best describes the forces acting on the toy car as it rolls down?

  17. The image of a person sitting still on a skateboard.
    According to Newton's first law, what will happen to the skateboard if the person suddenly stands up?

  18. The image of a heavy box being pushed across a floor.
    Which law explains why it is harder to push the box than to keep it moving once it has started?

  19. The image of a pendulum swinging back and forth.
    How does Newton's first law apply to the pendulum at the top of its swing?

  20. The image of a glider flying smoothly.
    Explain how Newton’s laws apply to maintain the glider's motion without any propulsion.

Correct Answers

  1. Newton's first law (Inertia).
  2. B. The player's foot applies a force on the ball, and the ball applies an equal force back on the foot.
  3. Newton's first law (Inertia).
  4. B. Friction.
  5. They will have the same acceleration (in a vacuum).
  6. C. Third Law.
  7. B. Friction.
  8. The basketball will remain at rest until a force acts on it (the force of gravity).
  9. A. The acceleration increases.
  10. The net force is zero.
  11. The net force is zero.
  12. A. First Law.
  13. The child will continue moving forward due to inertia until acted upon by another force.
  14. The bat applies a force to the ball, and the ball applies an equal and opposite force to the bat.
  15. B. The bicycle will speed up.
  16. The forces acting include gravity pulling the car down and friction resisting the motion.
  17. The skateboard will roll backward due to inertia.
  18. Newton's first law (Inertia).
  19. At the top, it has maximum potential energy and will remain at rest until acted upon by gravity.
  20. The glider maintains motion due to inertia and equilibrium of forces (lift and gravity).

This quiz covers the basic concepts of Newton's laws of motion while engaging students with practical examples.