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प्रश्न
A body starting from rest travels with uniform acceleration. If it travels 100 m in 5 s, what is the value of acceleration ?
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उत्तर
We have to find the acceleration of the body. We have the following information given, Initial velocity,
Let the acceleration be (a)
Time taken,(t) = 5 s
Distance travelled, (s) = 100 m
We can calculate the distance travelled by using the 2nd equation of motion,
`s = ut + 1/2at^2`
Put the values in above equation to find the acceleration of the body ,
`100 = 0(5) + 1/2(a)(5^2)`
On further simplification ,
`(25a)/2` = 100
therefore,
`a = 200/25`
= `8 "m/s"^2`
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