Question

a man running with a initial velocity of 10m/s and after 5 sec his velocity reduces to 5m/s then find the acceleration

Answer 1

Answer :-

Given

• Initial veloicty (u) = 10 m/s
• Final velocity (v) = 5 m/s
• Time taken (t) = 5 sec

To find

• Acceleration - a

Formula used

• $\boxed{\sf a = \frac{v-u}{t}}$

Solution

• u = 10 m/s
• v = 5 m/s
• t = 5 sec

Substituting the value in formula :-

$\sf a = \dfrac{v-u}{t}$

$\sf a = \dfrac{5 - 10}{5}$

$\sf a = \dfrac{ - \cancel{ 5}}{\cancel 5}$

$\sf a = - 1 \:m/s^2$

$\boxed{\rm\red{ Acceleration = -1 \:m/s^2}}$