Unit 8 Test Review - Force and Motion

Acceleration is

• slowing down

• turning

• going faster

• all of the above

The greater the mass of the object, the greater it is will resist a change in its motion.

• True

• False

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NGSS.MS-PS2-2

My dog Trevor, who is 9.09 kg, jumps for a treat, with an acceleration of 0.7 m/s². What is the force that his legs exert?

• 6.36 N
• 12.9 N
• 0.077 N

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NGSS.MS-PS2-2

My dog Trevor shakes his favorite chew toy with a force of 43 N at an acceleration of 0.18 m/s². What is its mass?

• 7.74 kg!
• 239 kg!
• .004 kg!
• 43.18 kg!

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NGSS.MS-PS2-2

What is the acceleration of my dog's cage if it is 5.0 kg and he pushes it across the room with a force of 0.07 N?

• 71 m/s²
• .35 m/s²
• 5.07 m/s²
• 0.014 m/s²

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NGSS.MS-PS2-2

My dog Trevor got hungry and made his way downstairs at a speed of 3.3 m/s. He realized he was getting steak for dinner so he sped up to 4.2 m/s, all within 1 second. What was his acceleration?

• 0.9 m/s²
• -0.9 m/s²
• 0.9 N
• 0.9 kgm/s

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NGSS.MS-PS2-2

Force is measured in

• kg

• m/s

• N

• m/s²

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NGSS.MS-PS2-2

Acceleration is measured in

• Newtons

• Kilograms

• m/s

• m/s²

F=ma

An object of mass 10 kg is accelerated upward at 2 m/s². What force is required?

• 20 N upward

• 2 N East

• 5 N downward

• 0 N

If you increase the mass on an object, its acceleration

• decreases
• stays the same
• also increases
• stops

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NGSS.MS-PS2-2