Question

7. Calculate the force required to impart to a car velocity of 30 m/s in seconds starting from rest . The mass of the car is 1500 Kg

Answer 1

Explanation:

When a car starts from the rest, its initial velocity is 0 and here its moving velocity is mentioned to be 30m/s.

So the difference in these two velocities is 30 – 0 = 30 m/s.

Hence, the acceleration of the car is calculated as this difference in velocities / time,

means here it is 30 / 10 = 3.

The formula for finding the force is acceleration x mass, i.e. 1500 x 3 = 4500 Newton.

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Answer 2

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