Question

A car is speeding up from 10m/s to 15m/s over a distance of 80m. How long will it take for the car to reach 15m/s?

Answer 1

Answer:

6.4 secs

Distance = 80m

Initial velocity = 10m/s

final velocity = 15m/s

now,

v^2 = u^2 + 2as

putting the values we get

a = 125/160 m/s^2

now,

v = u + at

putting the values we get

t = 6.4 secs