Exam: 8.6b Speed, Velocity, Acceleration

A measurement of how fast an object is moving

• Velocity
• Speed
• Vector
• Acceleration

What is the formula to calculate speed?

• Speed = time/distance
• Speed = distance/time
• Speed = distance x time
• Speed = time x distance

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

• Green object is moving at a faster constant speed than Red

• Red object is moving at a faster constant speed than Green

• Green object is moving at a slower constant speed than Red

• Red object is moving 2 times faster than Green

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

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

What is the average speed from 0-5 seconds?

• 1 m/s north

• 5 m/s

• 1 m/s

• 1 m/s^2

You ride your bike in a straight line at a constant speed of 10 km/h.

• Acceleration occurred because speed increased.
• Acceleration did not occur because neither speed nor direction changed.
• Acceleration occurred because you changed directions.
• Acceleration occurred because speed decreased.

Describe the speed of the object from 4-6 seconds using the distance vs. time graph.

• Increasing speed
• Decreasing speed
• Not moving
• Constant speed

Describe the speed of the object from
2-5 seconds using the speed vs. time graph.

• Increasing speed
• Not moving
• Decreasing speed
• Constant speed