Question

A body initially travelling a 10m/s is given a retardation of 2m/s for 3s find its final velocity​

Answer 1

Answer:

The required final velocity is 4 m/s

Explanation:

Given :

A body initially travelling at 10 m/s is given a retardation of 2 m/s² for 3 s

To find :

the final velocity

Solution :

Using the first equation of motion,

v = u + at

where

v denotes the final velocity

u denotes the initial velocity

a denotes the acceleration

t denotes the time

Substitute,

u = 10 m/s

a = -2 m/s² (retardation)

t = 3 s

v = 10 + (-2)(3)

v = 10 - 6

v = 4 m/s

Therefore,the required final velocity is 4 m/s