Question

A car starting from 5m/s acquires a velocity of 69m/s in 4s .Calculate the acceleration.​

Answer 1

Question:

A car starting from 5m/s acquires a velocity of 69m/s in 4s .Calculate the acceleration.​

Answer:

a = 16m/s²

Explanation:

Given: initial velocity (u) = 5m/s

           final velocity (v) = 69m/s

           time (t) = 4s

           accleration (a) = ?

By 1st equation of motion

v = u + at

69 = 5 + 4a

4a = 69 - 5

4a = 64

a = 64/4

a = 16m/s²

Hope you understand

Answer 2

• initial velocity=u=5m/s
• Final velocity=v=69m/s
• Time=t=4s

We know

$\boxed{\sf Acceleration=\dfrac{v-u}{t}}$

$\\ \rm\longmapsto Acceleration=\dfrac{69-5}{4}$

$\\ \rm\longmapsto Acceleration=\dfrac{64}{4}$

$\\ \rm\longmapsto Acceleration=16m/s^2$