Question

A body starts from rest and moves with an acceleration 2m/sec square until it's Velocity becomes 20m/sec.The distance covered is______m.​

Answer 1

Answer:

use this equation

Explanation:Initial velocity of the body  u=0

Let the constant acceleration be a.

Displacement of the body   S=ut+  

2

1

​  

at  

2

 

∴   S=0+  

2

1

​  

at  

2

 

We get   S=  

2

at  

2

 

​  

 

Thus, displacement of the body is directly proportional to the square of the time.

Answer 2

Explanation:

A.T.Q

a=2m/sec²

u=0(since it start from rest)

v=20m/sec

v=u+at

20=0+2*t

t=10sec

now , distance=speed *time

so,d=20*10

d=200m