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slava [35]
3 years ago
7

A ball rolls at a speed of 6cm/s. How far does the ball roll in 40 seconds ? ____cm

Physics
1 answer:
sesenic [268]3 years ago
8 0

Answer:

240cm

Explanation:

Speed = 6cm/s

Time = 40 seconds

Speed= distance/time

6cm/s = distance/40seconds

Distance = 6×40

Distance = 240cm

Hence, in 40 seconds, the ball must have rolled the distance of 240cm

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To a good approximate, the only external force that does work on a cyclist moving on level ground is the force of air resistance
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Explanation:

To a good approximate, the only external force that does work on a cyclist moving on level ground is the force of air resistance. Suppose a cyclist is traveling at 15 km/h on level ground. Assume he is using 480 W of metabolic power.

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(b)

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definition of terms

power is the rate at which work is done

force is that which changes a body's state of rest or uniform motion in a straight line

velocity is the change in displacement per unit time.

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3 years ago
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3 years ago
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