Physical Science Study Guide

John drove a truck for one hour at a rate of 80 kilometers per hour (km/hr). The next hour, he drove at 100 km/hr. What was his average speed during those two hours? _______ km/hr

• 70km/hr

• 90km/hr

• 120km/hr

• 95km/hr

If the bus continues moving at the same speed, what is the total distance that it will have traveled in 7.5 minutes? _______ m

• 8500m

• 9000m

• 7500m

• 8000m

A student pushes on an object with a force of 6 newtons and the object does not move. What force does the object exert on the student's hands? _______ N

• 2

• 4

• 6

• 8

If the car continues moving at the same rate for 2 minutes, it will travel a distance of ____________ m.

• 120m

• 90m

• 130m

• 160m

During which labeled period is the acceleration of the car greatest?

• 1

• 2

• 3

• 4

Refer to the Velocity vs. Time graph above. Which time interval shows a constant velocity and no acceleration?

• 18 s to 24 s

• 4 s to 18 s

• 0 s to 24 s

• 0 s to 3 s

The mathematical model for calculating speed is shown below. Speed = distance/time. An airplane traveled 700 kilometers in two hours during a trip. What was the average speed of the plane during the trip?

• 5.8 kilometers per hour

• 350 kilometers per hour

• 1400 kilometers per hour

• 84,000 kilometers per hour

During which time interval does the student walk with a negative acceleration?

• 0–2 seconds

• 2–4 seconds

• 4–8 seconds

• 8–12 seconds

What is the magnitude of the net force on the box?

• 5N in Northeast direction

• 8N in Northeast direction

• 7N in Northeast Direction

• 10N in Northeast Direction