Force and Motion Quiz

What is the definition of motion?

• Change in speed of an object over time.

• Change in shape of an object over time.

• Change in color of an object over time.

• Change in position of an object over time.

What are the three types of motion?

• linear motion, circular motion, and oscillatory motion

• random motion

What is the difference between speed and velocity?

• Speed is always positive, while velocity can be positive or negative depending on the direction of motion.

• Speed is scalar, velocity is vector.

What is the unit of force?

• Second (s)

• Newton (N)

What is Newton's first law of motion?

• An object in motion will change its direction if an external force is applied to it.

• An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and direction, unless acted upon by an external force.

What is the net force acting on an object at rest?

• undefined

• zero

What is the direction of force when an object is pushed to the right?

• right

• left

• up

• down

What is the direction of force when an object is pulled downwards?

• sideways

• downwards

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1. A satellite was in two separate crashes. In both crashes, the satellite had the same mass. Engineers want to know about the speed and direction of the satellite after the crashes.

3. Why would the crash affect the motion of the satellite?

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2. In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes were sliding toward each other and crashed. The crash caused both boxes to change speed.

3. Based on the information provided, which statement is correct? In your answer, explain what the forces were like and why the boxes changed speed.

   • Box 1 has more mass than Box 2.

   • Box 1 and Box 2 are the same mass.

   • Box 1 has less mass than Box 2.

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