Question

A body is travelling with a velocity of 30m/s. It is given an acceleration 5m/s. What will be its velocity after 4 seconds?

Answer 1

Answer:

v = 50 m/s

Explanation:

u = 30

t = 4

a = 5

v = ?

We can use the first equation of motion

v = u + at

v = 30 + 5(4)

v = 30 + 20

v = 50 m/s

Answer 2

Answer:

Velocity of body after 4 seconds is = 50 m/s

Step by step explanation:

Given, initial velocity, u = 30 m/s

           acceleration, a = 5 m/s

            time, t = 4 sec

to find,  final velocity, v = ?

We Know That,   v = u + at

                 ⇒ v = (30) + (5) x (4)

                        = 30 + 20

            ⇒       v = 50 m/s