Question

A car travelling at 20 m/s takes a u turn in 20 seconds without changing its speed . What is the average acceleration of the car

Answer 1

Given that,

Initial speed of the car, u = 20 m/s

It takes u turn, so that, its final speed becomes, v = -20 m/s

Time, t = 20 s

To find,

The acceleration of the car.

Solution,

The rate of change of velocity is called acceleration of an object. It is given by :

$a=\dfrac{v-u}{t}\\\\a=\dfrac{(-20)-20}{20}\\\\a=-1\ m/s^2$

So, the magnitude of of acceleration of the car is $1\ m/s^2$.

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Answer 2

Explanation:

@abjalkhan8604

sir,

-20-20= -40

that means answer is - 2metre per second square sir

thank you