Acar moving with an initial speed of 25 m/s slows down to a speed of 5 m/s in 10 seconds calculate a) the acceleration of the car.? b) the distance covered by the car

Answer :

(a) The acceleration  of the car is,

(b) The distance covered by the car is, 150 m

Explanation :  

By the 1st equation of motion,

...........(1)

where,

v = final velocity = 5 m/s

u = initial velocity  = 25 m/s

t = time = 10 s

a = acceleration  of the car = ?

Now put all the given values in the above equation 1, we get:

The acceleration  of the car is,

By the 2nd equation of motion,

...........(2)

where,

s = distance covered by the car = ?

u = initial velocity  = 25 m/s

t = time = 10 s

a = acceleration  of the car =

Now put all the given values in the above equation 2, we get:

By solving the term, we get:

The distance covered by the car is, 150 m

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