Forces and Moments

According to Newton's First Law, an object at rest will tend to do which of the following?

• stay at rest
• stay in motion
• speed up
• change in direction

According to Newton's First Law, an object in motion will tend to:

• stay at rest
• stay in motion
• change in direction
• slow down

Which of the following could cause an acceleration?

• A balance between two forces
• A balance between three forces
• An imbalance between two forces
• Zero forces

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NGSS.MS-PS2-2

Multiplying the mass and acceleration of an object would give you:

• the force of gravity
• the force of friction
• the velocity
• the net force

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NGSS.MS-PS2-2

Multiplying the mass and acceleration of an object would give you:

• the force of gravity
• the force of friction
• the velocity
• the net force

We often say that g = -9.8 m/s². The lowercase g represents:

• the speed of gravity
• the velocity of gravity
• the acceleration of gravity
• the force of gravity

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

An object has a mass of 10 kg. What is its weight?

• 0.98 kg
• 0.98 N
• 98 kg
• 98 N

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Fill in the blanks: _____ does not change from place to place, but _____ can change because of differences in the strength of gravitational pull.

• acceleration, weight
• weight, acceleration
• mass, weight
• weight, mass

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NGSS.MS-PS2-4

A rabbit pushes down on a turtle. What is the reaction force?

• The turtle pushes down on the ground.
• The ground pushes up on the turtle.
• The air pushes down on the rabbit.
• The turtle pushes up on the rabbit.

A child pulls on a toy with a force of 25 N to the right. Another child pulls the toy with 15 N to the left. The net force is:

• 1.7 N to the right
• 1.7 N to the left
• 10 N to the right
• 10 N to the left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2