Forces and Motion Pretest

An object is pulled to the left by a force of 50N. The same amount of force pulls it to the right. the object will _______.

• stay at rest

• accelerate to the left

• accelerate to the right

• change its direction

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A 200-N woman is standing on a concrete floor. How much force does the floor exert on her?

• zero

• 200 N

• 180 N

• 300 N

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

A 50-kg object is acted by a net force of 360 N. How much does it accelerate?

• 3.6 m/s2

• 7.2 m/s2

• 9.8 m/s2

• 12 m/s2

Tags

NGSS.MS-PS2-2

A horizontal force of 8N is applied to a 2-kg. object resting on a frictionless table. How much will the object accelerate?

• 0.25 m/s²

• 4.0 m/s²

• 8.0 m/s²

• 12 m/s²

Tags

NGSS.MS-PS2-2

In the absence of an external force, a moving object will _______?

• stop immediately

• go faster and faster

• move with constant velocity

• slow down and eventually stop

How much force is required to accelerate a car with a mass of 2000kg to 3 m/s² ?

• 600 N

• 667 N

• 6000 N

• 6000 kg.m/s

Tags

NGSS.MS-PS2-2

Which law of motion states that for every action, there is an equal and opposite reaction?

• law of inertia

• law of acceleration

• law of interaction

• law of gravitation

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NGSS.MS-PS2-1

Which of the following equations describe the 2nd law of motion?

• m=F x a

• W=Fxd

• F=m x a

• P= W x t

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NGSS.MS-PS2-2

Which of the following is the unit of force?

• kg.m/s

• kg.ms²

• Newton (N)

• Joule

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NGSS.HS-PS2-1

If the same net force acts on an object, what happens to its acceleration as its mass increases?

• decreases

• increases

• stays the same

• cannot be determined

Tags

NGSS.MS-PS2-2