Question

what will be the final velocity of a car if it starts from rest and accelerates at 8m/s after 4​

Answer 1

Answer:

32 m/s

Explanation:

From the question :-

Initial velocity = 0 m/s

Final velocity = V (to find)

Acceleration = 8 m/s²

Time = 4 sec.

Solution :-

Initial velocity = U

Final velocity = V

Acceleration = A

Time = T

By first Kinematical equation :-

V = U + A*T

V = 0 m/s + 8 * 4 (m/s)

V = 0 + 32 (m/s)

v = 32 m/s

Hence, the final velocity of the car will be 32 m/s.

Answer 2

Answer:

32 m/s

Explanation:

In this v=u+at equation,

u is initial velocity

v is the final velocity

a is acceleration

t is the time period

Since the starts from rest u=0

therefore, v=0+8*4

v=32m/s