Question

a body moving with a velocity of 240 m/s decreases to 160 m/s in 8s The retardation of the body is​

Answer 1

Explanation:

u=240m/s

v=160m/s

t=8s

after substitution of the values,

a=160-240/8

a= (-)10 m/second square

Answer 2

Given :

Initial velocity of the body = 240 m/s

Final velocity of the body = 160 m/s

Time = 8 sec

To find:

The retardation of the body

Calculation :

The retardation of the body is also known as negative acceleration of the body

Acceleration  = change in velocity/time taken

                       = (160 - 240) / 8

                       = -10 m/s²

The retardation of the body is 10 m/s²