Midterm Physical Science Spring '23

The speed you read on a speedometer is

• instantaneous speed
• constant speed
• average speed
• velocity

3 m/s north is an example of a(n)

• speed
• velocity
• time
• acceleration

A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant

• speed
• velocity
• direction
• acceleration

Motion is a change in

• time
• speed
• velocity
• position

How long will it take an object traveling at 25 m/s to reach a distance of 125 meters?

• 5 s

• 0.2 min

• 5 m

• 0.2 s

A high-speed train travels with an average speed of 227 km/hr. The train travels for 2 hrs. How far does the train travel?

• 113.5 km

• 454 km

• 0.0088 km

• 225 km

A cross-country runner runs 10 km in 40 minutes. What is his average speed?

• 30 km/min

• 4 km/min

• 400 km/min

• 0.25 km/min

Acceleration is rate of change of

• position
• time
• velocity
• speed

Find the acceleration of a car that goes from 32 m/s to 96 m/s in 8.0 s.

• 8.0 m/s^2

• -8.0 m/s^2

• 12 m/s^2

• 4.0 m/s^2

Which statement about the movement of an object with zero acceleration could be true?

• the object is speeding up
• the object is slowing down
• the object is moving at a constant speed
• the object is changing direction