Question

How far will a body move in 4 seconds if uniformly accelerated from rest at the rate of 2m/s

Answer 1

Dear student,

Since the question is very simple, we tackle it with the help of unitary method.

We know that during acceleration particularly uniform acceleration the body undergoes an increase/decrease in its speed with the increase in time.

          acceleration, a = 2 m/s²

          time period, t = 4 seconds

Distance traveled in 1 sec = 2 × 1 m

Similarly,

Distance traveled in 4 sec = 2 × 4

                                            = 8 m

Hence, the body will move 8 m far in 4 seconds if uniformly accelerated from rest at the rate of 2 m/s².

                       

Answer 2

Answer:

16 m

Explanation:

S = ut + 1/2 at²

= 0 + 1/2 x 2 x 4²

= 16m