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When a 2 kg car driven at 20 m+s in a leveled road is suddenly put into neutral gear the velocity decreased in the following manner V = 20/[1+(t/20)] m/s. Where t I time in sec . The deceleration of car at the instant it`s speed is 10 m/s is???

When a 2 kg car driven at 20 m+s in a leveled road is suddenly put into neutral gear the velocity decreased in the following manner V = 20/[1+(t/20)] m/s. Where t I time in sec . The deceleration of car at the instant it`s speed is 10 m/s is???

Grade:12

1 Answers

Mathematics Expert - askIITians
askIITians Faculty 44 Points
6 years ago
The velocity equation is

Substitute the value of V.

Differentiate equation (1) with respect to t.

Calculate the deceleration at t=20 s.

Hence, the deceleration is

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