Question

A car accelerates at a a rate of 3.0m/s ^2. If its original velocity is 8.0m/s, how many seconds will it take the car to reach a final velocity of 25.0m/s?

Answer 1

w kt v= u + at

given u is 8 mpers
a is 3 mperssqurae
v is 25e
$25 = 8 + 3 \times t \\ t = 17 \div 3second$
t is 5.667 seconds

Answer 2

Use equation of motion => v = u + at

Rearrange the above equation
t = (v - u) / a
= (25.0 m/s - 8.0 m/s) / (3.0 m/s²)
= 5.7 seconds

It takes 5.7 seconds to gain that velocity.