Question

A body moving on a straight line at 20 m/s undergoes an acceleration of 40 m/s^2 after 2 sec its velocity will be

Answer 1

Answer:

100 m/s

Explanation:

Given :

Initial velocity = u = 20 m/s

Acceleration = a = 40 m/s²

Time taken = t = 2 seconds

To find :

Final velocity of the body

Using the first equation of motion :

V=u+at

V=20+40×2

V=20+80

V=100 m/s

The final velocity of the object is equal to 100 m/s

More:

• Second equation of motion = s=ut+½×at²

• Third equation of motion = v²-u²=2as