Laws of Motion

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Question 1

According to Newton’s First Law, an object stays at rest or in constant motion unless acted upon by an external force. This property is called:

  • Inertia

  • Acceleration

  • Momentum

  • Force

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Question 2

Why do you fall backward when jumping off a moving bus?

  • Gravity

  • Friction

  • Inertia

  • Force

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Question 3

What is the formula for Newton’s Second Law of Motion?

  • F=ma

  • F=mv

  • F=m/a

  • F=v/m

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Question 4

Gun recoil is an example of which of Newton’s Laws?

  • First Law

  • Second Law

  • Third Law

  • Conservation of Momentum

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Question 5

What does the moment of inertia depend on?

  • Speed of rotation

  • Shape and mass distribution

  • Distance traveled

  • External forces

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Question 6

Momentum is the product of:

  • Rate of change of velocity

  • Rate of change of displacement

  • Mass and velocity

  • Force and time

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Question 7

What does the law of conservation of momentum state?

  • Momentum is never conserved

  • Total momentum before a collision equals after, if no external forces act

  • Momentum is conserved only in elastic collisions

  • Momentum is conserved in a closed system

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Question 8

Impulse is:

  • Force applied over time

  • Change in velocity

  • Rate of change of acceleration

  • Mass multiplied by velocity

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Question 9

Friction helps a car accelerate by:

  • Increasing speed

  • Reducing acceleration

  • Providing the force to move forward

  • Having no effect

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Question 10

In circular motion, the force keeping an object moving in its path is:

  • Frictional force

  • Gravitational force

  • Centripetal force

  • Centrifugal force

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Physics

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