Physical Science Unit 2 - Forces (Practice)

An object at rest will _______ if no outside forces are applied.

• Stay at rest
• Increase Velocity
• Decrease Mass

The SI unit of force is...

• Kilograms

• Newtons

• Meters per second

• Pounds

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first? (Assume air resistance is negligible.)

• the cannonball

• the baseball

• The balls land at the same time.

• the ball with the larger volume

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NGSS.MS-PS2-4

For every force exerted on an object, there is an equal and opposite force exerted on a different object.

• Newton’s first law of motion

• Newton’s second law of motion

• Newton’s third law of motion

Tags

NGSS.MS-PS2-1

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have greater acceleration? (F = ma)

• The one with a mass of 0.78 kg will have greater acceleration.

• The one with a mass of 0.52 kg will have greater acceleration.

• They will both accelerate at the same rate.

Tags

NGSS.MS-PS2-2

Without any force to change it, an object at rest stays at rest, and an object in motion stays in motion.

• Newton’s first law of motion

• Newton’s second law of motion

• Newton’s third law of motion

A greater applied force is required to move an object with more mass than one with less mass.

• True

• False

Tags

NGSS.MS-PS2-2

If you exert a net force of 8 N on a 2 kg object, what will its acceleration be?

• 2 m/s²

• 4 m/s²

• 16 m/s²

• 10 m/s²

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NGSS.MS-PS2-2

The swimmer moves her hand backward and to the left, causing her body to move forward and to the right.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

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NGSS.MS-PS2-1

A force of 20 N acts on a 5 kg block. What is its acceleration?

• 4 m/s²

• 100 m/s²

• 10 m/s²

• 5 m/s²

Tags

NGSS.MS-PS2-2