A delivery van has 80000j of kinetic energy. if the brakes can supply a force of 12,500n to bring the van to stop, how far will the van travel while coming to rest after the brakes are applied?

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06-06-2022
Physics

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A delivery van has 80000j of kinetic energy. if the brakes can supply a force of 12,500n to bring the van to stop, how far will the van travel while coming to rest after the brakes are applied?

Sagot :

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sp10925 sp10925 · Answer 1 · 2022-06-15T04:44:23-04:00

The distance, van travels while coming to rest after brake applied is 6.4m

What is Work energy theorem?

It states that the Work done in moving a body is equal to the change in kinetic energy of the body

Given is a delivery van whose kinetic energy K.E = 80000J and the force applied to brake F = 12500 N.

The brakes are applied to stop the van, so, final velocity is zero. Then, change in kinetic energy will be

According to work energy theorem, work done is

W = ΔK.E = K.Ef - K.Ei

W = - 80000J

Work done is also defined as the product of force applied and the distance it travelled.

W = Fs

80000 = 12500 x s

s = 6.4 m

Thus, the distance, van travels while coming to rest after brake applied is 6.4m

Learn more about work energy theorem.

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A delivery van has 80000j of kinetic energy. if the brakes can supply a force of 12,500n to bring the van to stop, how far will the van travel while coming to rest after the brakes are applied?

Sagot :

What is Work energy theorem?

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