Average Speed and Velocity

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

Tags

NGSS.MS-PS3-1

Alan travels 100 km in 5hrs. Find his average speed in km/h

• 5km/hr
• 10km/hr
• 50km/hr
• 20km/hr

What is the speed of an object that travels 60 meters in 4 seconds?

• 240 m/s
• 15 m/s
• 0.067 m/s
• 15 mph

Tags

NGSS.MS-PS3-1

Which of the following is a unit of time?

• sec
• mi
• m/s
• km

Which of the following is a unit of speed?

• km/hr
• hr
• km
• s

Your science class is studying speed, so you decide to set up an experiment. You roll 4 different balls down the hallway, and record the time it takes using a stopwatch. The results of these trials are in the table.

Using this data, rank the balls from slowest to fastest. (You will have to calculate the speed for each ball.)

• C, A, B, D

• D, B, A, C

• D, B, C, A

• A, B, C, D

Tags

NGSS.MS-PS3-1

What is the formula for average speed?

• Average Speed = Total Time undefined Total Distance

• Average Speed = Total Time + Total Distance

Constant speed is:

• When the speed increases or decreases
• When the speed of the object does not change

All of the following are units of speed except:

• Seconds
• m/s
• Km/s
• m/min

What is the speed of a rocket that travels 9000 meters in 12.12 seconds?

• 725 m/s

• 7,425 m/s

• 742.5 m/s

• 680 m/s

Tags

NGSS.MS-PS3-1