Question

. A body is moving with a uniform velocity of 20 m\sec. After 10 sec,its velocity would be *

Answer 1

Given :

A body is moving with a uniform velocity of 20m/s.

To Find :

Velocity of body after 10s$.$

Concept :

Acceleration is defined as the rate of change of velocity.

The basic concept behind this question is,

Acceleration of body moving with uniform velocity = zero

Calculation :

⇒ a = v - u / t

⇒ 0 = v - 20 / t

⇒ v - 20 = 0

⇒ v = 20m/s

Velocity of body remains constant.

Answer 2

Given ,

• Initial velocity (u) = 20 m/s
• Time (t) = 10 sec

We know that ,

if object is moving with uniform velocity ,

Acceleration (a) = 0 m/s

And

$\boxed{ \sf{v = u + at}}$

Thus ,

v = 20 + 0 × 10

v = 20 m/s

Therefore ,

• The velocity of a body after 10 sec will be same as 20 m/s