(b) Calculate the momentum when a mass of 40kg is moving with a velocity of 20m/s in the forward
2 answers:
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Answer:
Explanation:
Given,
Distance travelled ( d ) = 176.4 meters
Time taken ( t ) = 4.5 seconds
<u>Finding </u><u>the </u><u>speed </u><u>of </u><u>a </u><u>cheetah</u>
Speed
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<u>Let's </u><u>learn </u><u>about </u><u>Speed </u> :
Suppose a body moves 20 m in 2 seconds, either on a curved path or on a straight path. So , 10 m is the distance travelled by the body in each second which can be written as 10 m/s. This is called speed of the body. Thus, <u>Speed </u><u>is </u><u>defined </u><u>as </u><u>the </u><u>distance</u><u> </u><u>travelled</u><u> </u><u>per </u><u>unit </u><u>time.</u> It is the rate of distance travelled by a body.
Mathematically,
In SI system, the unit of distance is metre and time is second. Thus , the <u>SI </u><u>unit </u><u>is </u><u>speed </u><u>is </u><u>m/</u><u>s.</u>
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