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, Speed is defined as the distancetravelledper unit time. 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 SI unit is speed is m/s.

## Answers ( )

Answer:Explanation:Given,

Distance travelled ( d ) = 176.4 meters

Time taken ( t ) = 4.5 seconds

FindingthespeedofacheetahSpeed

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Let’slearnaboutSpeed: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,

Speedisdefinedasthedistancetravelledperunittime.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

SIunitisspeedism/s.Hope I helped!

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