Question

A body is travelling along straight line changes its velocity from 10m/s ti 20m/s in 4 second. find the acceleration of the body

Answer 1

hey there !!!

◆according to the definition of acceleration/// "' rate of change of velocity is called acceleration""

●using above statement:---

=) we conclude that : a = change in vel./time .
i.e. a = ∆v/∆t ---------(1)

=) Given that , u = 10 m/S
v = 20m/s

=) time taken (t) = 4sec

so acceleration (a) =( v - u) /t = (20-10)/4

= 10/4 = 2.5 m/s^2 ans.

______________________________

HOPE IT WILL HELP U ^_^

Answer 2

hi friend
here's your answer looking for

as we know that,

☢acceleration =

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

here,

v= 20 m/s

u= 10m/s

and

t= 4sec
so,

☮acceleration =

☢$\frac{20 - 10}{4} \\ \\ = \frac{10}{4} \\ \\ = 2.5m {s}^{ - 2}$☣

so, this is your answer

hope you are satisfied with my answer