Force and Motion

Suppose a bulldozer is being hauled on the back of a flatbed truck to a construction site. From which reference point would the bulldozer not appear to be moving?

• The road

• A traffic light

• The truck driver

• A roadside tree

What are the units for force?

• Joules

• Watt

• Newton

• Meters per second

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

The combination of all forces acting on an object is?

• Balanced Forces

• Net Force

• Unbalanced Forces

• Friction

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An object with balanced forces is

• At rest

• Speeding up

• Slowing down

• Accelerating

When two forces are acting in opposite directions on an object, you __________ to find the net force.

• Subtract the forces

• Add the forces together

• Multiply the forces together

• Divide the forces

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NGSS.HS-PS2-1

What changes in motion show that an object is accelerating?

• Increase in speed.

• Decrease in speed.

• Change in direction.

• All of the above.

Anna hits a golf ball, and it soars through the air toward the green. It travels in an arc over the ground. Which statement does not describe the ball’s acceleration before it stops?

• It increases speed.

• It decreases speed.

• It changes overall direction.

• It moves in the same direction.

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NGSS.MS-PS3-5

What does it mean if an object's speed is 5 m/s?

• It moves 1 meter every 5 seconds.

• It moves 5 miles every second.

• It moves 5 meters every second.

• It doesn't move for 5 seconds.

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NGSS.MS-PS3-1

What does it mean if an object's acceleration is 5m/s^2?

• It moves 5 meters every second.

• It increases its speed by 1 meter every 5 seconds.

• It increases its speed by 5 meters per second every second.

• It increases its speed by 5 meters every second.

What does a distance vs. time graph represent?

• An object's acceleration.

• An object's mass.

• An object's kinetic energy.

• An object's speed.

Tags

NGSS.MS-PS3-1