Question

A child has a toy car on a horizontal platform .the car starts from rest and reaches a maximum speed in 4s if the mass of the car is 0.1kg and engine has an effective pull of 0.4N find the acceleration and the maximum speed of the car

Answer 1

The acceleration is 4 m/s^2 and maximum speed is 16 m/s.

Explanation:

We are given:

Initial velocity = 0 m/s

Mass of the car = 0.1 Kg

Force = 0.4 N

As we know that

F = ma

0.4 = 0.1 x a

a = 0.4 / 0.1 = 4 m/s^2

Now by using first equation motion velocity can be determined.

v = u + at

V = 0 + 4 x 4

V = 16 m/s

Hence the acceleration is 4 m/s^2 and maximum speed is 16 m/s.

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