Question

What is the acceleration of a person that goes from 0 m/s to 25 m/s in 5 seconds?

Answer 1

To Find :

• acceleration of person

Solution :

• initial velocity (u) = 0m/s
• Final velocity (v) = 25m/s
• Time taken (t) = 5sec

$\bullet\boxed{ \boldsymbol{Acceleration = \frac{v - u}{t} }}$

a = 25 - 0/5

a = 25/5

a = 5m/s²

Hence,

• Acceleration of person is 5m/s²

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Answer 2

Given:

A person goes from 0m/s to 25m/s in 5 seconds.

To find:

Acceleration of person ?

Calculation:

• Acceleration is a vector quantity characterized by the rate of change of velocity with respect to time.

Applying EQUATIONS OF KINEMATICS:

$\rm \: v = u + at$

$\rm \implies \: a = \dfrac{v - u}{t}$

$\rm \implies \: a = \dfrac{25 - 0}{5}$

$\rm \implies \: a = 5 \: m {s}^{ - 2}$

So, acceleration of object is 5 m/s².