Calculating Motion and Speed

What is the formula to calculate speed?

• Speed = Distance x Time

• Speed = Distance / Time

• Speed = Time / Distance

• Speed = Time x Distance

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All of the following are units of speed except:

• Km / hr

• Km

• Kilometer per hour

• Kilometer / Hour

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Constant speed is:

• When the speed increases or decreases

• When the speed of the object does not change

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Calculate the speed:

A Car traveled 240 Km in 5 Hours

• 48 Km / Hr

• 1200 Km / Hr

• 4.8 Km / Hr

• 0.02 Km / Hr

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NGSS.MS-PS3-1

How would you calculate the speed for a car that went a distance of 125 kilometers in 2 hours time?

• 125 × 2

• 125 ÷ 2

• 2 ÷ 125

• 2 +125

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How would you calculate the time it takes for a bird flying at a speed of 45 km/hr to travel a distance of 1,800 kilometers?

• 45 ÷ 1,800

• 45 × 1,800

• 1,800 ÷ 45

• 1,800 - 45

How would you calculate the distance traveled by a comet that is flying through the solar system at a speed of 50,000 km/hr for 4 hours?

• 50,000 ÷ 4

• 50,000 × 4

• 4 ÷ 50,000

• 4 - 50,000

30 seconds is equal to

• 1 minute

• 0.5 minute

• 3 minutes

• 2 minutes

30 minutes is equal to

• 1 hour

• 0.5 hour

• 3 hours

• 2 hours

A storm is moving toward your house at a speed of 20 km/hr. It is now 60 km away from your house. In what time will the storm reach your house?

• 0.3 hours

• 1200 hours

• 3 km

• 3 hours