Question

A car started from rest and attain an acceleration of 5 m/s² in 30 sec. Find it's velocity al that instant in m/s.​

Answer 1

Given:

Initial velocity (u)=0
Time (t)=30s
Acceleration (a)=5m/s2

To find: Final velocity (v)

a=v-u/t

=>5=v/30

=>v=150m/s

Answer 2

Answer:

Initial Velocity(u)= 0m/s

acceleration (a)= 5m/s2

Time(t)=30s

We have to find the final velocity i.e v

From the first equation of motion we know,

v=u+at

v=0+ 5x30. [putting the values of u,a and t]

Therefore

v=150m/s

Therefore the velocity of that car at that instant is 150m/s.

Hope you understand ...Thank you...