Question

If a body is moving on a straight line with the velocity of 10 m/s and it changes its velocity to 20 m/s in 2 seconds ,what is its acceleration?

Answer 1

Answer:

$u = 10 \: m/s$

$v = 20 \: m/s$

$t = 2 \: s$

$a = \frac{v - u}{t}$

$a = \frac{20 - 10 }{2}$

$a = \frac{10}{2}$

$a = 5 \: m/{s}^{2}$

Answer 2

Answer:

u=10m/s

v=20m/sec

t=2 sec

v=u+at

20=10+2a

10=2a

a=5m/s^2