Physics Motion Quiz 12

Which of the following is a vector quantity?

• distance (d)

• displacement (∆x)

• speed (s)

• time (t)

• duration (∆t)

Which of the following is NOT a scalar quantity?

• 5 mph

• 10 Newtons

• 2 g

• -15 cm/s

• 20 pounds

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

The speed versus time graph shows the motion of an object for three minutes. What is the average speed of the object for the entire motion?

• 1.33 meters/min

• 2.66 meters/min

• 3.0 meters/min

• 4.0 meters/min

• 6.0 meters/min

Tags

NGSS.MS-PS3-1

Which pair of graphs represents an object that is moving at a constant speed? (The displacement graph should be interpreted as a position-time graph.)

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

You are traveling with a constant speed of 0.5 m/s in a cart that suddenly starts to roll downhill and speed up at 1.5 m/s/s. What is your velocity after speeding up for 7 seconds? (Write the number without units.)

You are traveling at a constant speed of 30 mph through rush hour traffic. Finally the traffic congestion clears up and you can start speeding up. If your speed increases 2 mph/s, how many seconds will it take to reach 60 mph? (Write the number without units.)

A train travels 6 meters in the first second of travel, 6 meters in the second second of travel, and 6 meters again during the third second. Its acceleration is:

• 0 m/s/s

• 6 m/s/s

• 12 m/s/s

• 18 m/s/s

• other

A car starts from rest and after seven seconds it is moving 42 m/s. What is the car’s average acceleration?

• 0.17 m/s/s

• 1.67 m/s/s

• 6 m/s/s

• 7 m/s/s

Tags

NGSS.MS-PS2-2

A car moves in a straight line. At t = 1 s its speed is 35 km/hr, at t = 2 s its speed is 40 km/hr, and at t = 3 s its speed is 45 km/hr. What is the car’s acceleration?

• 5 km/hr/s

• 10 km/hr/s

• 25 km/hr/s

• 35 km/hr/s

• 45 km/hr/s

A car accelerates at 2 m/s/s. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 20 m/s?

• 2 seconds

• 5 seconds

• 10 seconds

• 20 seconds

• 40 seconds