Physical Science Unit 2 Study Guide: Motion & Forces

This is calculated when you take the total distance traveled and divide by the total time.

• Average speed

• Acceleration

• Instantaneous speed

• Velocity

Tags

NGSS.MS-PS3-1

This describes an object's speed and direction.

• Velocity

• Acceleration

• Force

• Mass

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NGSS.MS-PS3-1

The slope on a distance vs. time graph tells you what?

• Speed

• Acceleration

• Distance

• Time

A runner jogs 60 m on a track toward the finish line, then turns and runs 20 m back. What is her distance? What is her displacement?

• Distance: 80 m; Displacement: 40 m

• Distance: 40 m; Displacement: 80 m

• Distance: 60 m; Displacement: 20 m

• Distance: 80 m; Displacement: 20 m

Kim travels 320 miles in 4 hours. What is her average speed?

• 80 miles per hour

• 60 miles per hour

• 100 miles per hour

• 40 miles per hour

The rate of change in velocity is know as what?

• Acceleration

• Force

• Momentum

• Displacement

How is it possible to have a constant speed but a changing velocity?

• By changing direction while maintaining the same speed.

• By changing the mass of the object.

• By increasing the speed gradually.

• By stopping and starting repeatedly.

What does it mean if an object has a negative acceleration?

• It is slowing down.

• It is speeding up.

• It is not moving.

• It is changing direction.

Tags

NGSS.MS-PS2-2

A skier is going downhill at a speed of 9 m/s. The hill gets steeper and his speed increases to 18 m/s in 3 seconds. What is his acceleration?

• 3 m/s²

• 6 m/s²

• 1.5 m/s²

• 9 m/s²

Tags

NGSS.MS-PS2-2

A bus traveling at 12 m/s comes to a stop after 6 seconds. What is its acceleration?

• -2 m/s²

• 2 m/s²

• -0.5 m/s²

• -72 m/s²

Tags

NGSS.MS-PS2-2