Speed, Velocity, Acceleration

What is your average speed if you take 0.5 h to jog 4,000 m?

• 8000 m/h
• 2000 m/h
• 0.000125 m/h
• 800 m/h

If the average speed of a car is 110 km/h, how long will it take the car to travel 715 km?

• 6 h
• 6.5 km/h
• 6.5 h

Kira jogs to a store 72 m away in a time of 36 s. What is Kira's average speed?

• 0.5 m/s
• 2 m/s
• 2 h

If you travel 7.5 km and walk for 1.5 h, what is your average speed?

• 5 km/h
• 11.25 km/h
• 0.2 km/h

An airplane traveling from San Francisco to Chicago travels 1,260 km in 3.5 h. What is the airplaine's avearge speed?

• 36 km/h
• 360 km/h
• 4,410 km/h

If you slow down on your bicycle, you accelerate.

• TRUE
• FALSE

Tags

NGSS.HS-PS2-1

if you ride your bicycle at a constant speed, you cannot accelerate.

• TRUE
• FALSE

Tags

NGSS.HS-PS2-1

Changing the speed and changing the direction of your bicycle are both examples of acceleration.

• TRUE
• FALSE

Tags

NGSS.HS-PS2-1

You are riding your bike at 9 km/h. Ten minutes later, your speed is 6 km/h.

• Acceleration occurred because speed increased.
• Acceleration occurred because speed decreased.
• Acceleration occurred because you changed directions.

You ride your bike around the block at a constant speed of 11 km/h.

• Acceleration occurred because speed increased.
• Acceleration occurred because speed decreased.
• Acceleration occurred because you changed directions.