Question

A body is moving in a straight inevitable with constant speed.what is its acceleration

Answer 1

Given:

A body is moving with constant velocity in a straight line

To Find:

Acceleration of given body

Solution:

We know that,

• For a body in motion

$\pink{\boxed{\bf{Acceleration=\frac{\triangle v}{\triangle t}}}}$

where,

Δv is change in velocity

Δt is given time interval

According to question,

Δv is 0, since it is given that speed of given body is not changing with time as it is constant or same for given time interval and also given body is travelling in a straight line

So,

$\longrightarrow\mathrm{Acceleration=\dfrac{0}{\triangle t}}$

 $\longrightarrow\mathrm{Acceleration=0\:m/s^{2}}$

Additional Information:

1) Speed- The distance covered by a moving body in unit time is called the speed of the body. It is a scalar quantity. Its S.I. unit is m/s.

2) Velocity- The rate of change in position or displacement is called velocity. It is a vector quantity and its S.I. unit is m/s.

3) Acceleration- It is defined as the rate of change of velocity. It is a vector quantity and its S.I. unit is m/s².