forces and acceleration

What is a measure of the change of velocity of a moving object?

• speed
• acceleration
• motion 
• velocity 

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Which is not an example of acceleration?

• Driving at a constant speed 
• A bat hitting a ball
• Throwing a football 
• Kicking a soccer ball

The force that a person or thing applies to an object 

• gravity
• nuclear forces
• applied forces
• friction

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NGSS.MS-PS2-1

The bottom picture is an example of 

• balanced forces 
• unbalanced forces

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Balanced forces always have a net force of 

• 10 N
• 0 W
• 10 W
• 0 N

_____________ causes changes in the speed and/or direction of motion. 

• Speed
• Force
• Velocity

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The SI unit for force is 

• Watt (W)
• Power (P)
• Newton (N)
• Force (F)

Objects falling through the air are slowed by the force of 

• velocity 
• acceleration 
• time 
• air resistance 

What force does the ground produce that makes it difficult to push things on the ground?

• Friction

• Gravity

• Density

A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.

• 30 m/s
• 24 m/s²
• 9 m/s²
• 81 km/hr

Tags

NGSS.MS-PS2-1

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