Question

A car traveling at 60km/h. It then accelerates at 3.6m/s^2.How long does it take to reach a new speed. How far does it travel during acceleration.

Answer 1

to get from 60km/h to a new speed v, it increases speed by 3.6m/s every second.

So, it takes (v-60)/3.6 seconds to accelerate

s = 1/2 a t^2 = 1/2 * 3.6 * [(v-60)/3.6]^2

Answer 2

oops - convert 60km/hr to m/s for initial velocity.

Answer 3

A car travel at 60 km/h. It the accelerates at 3.6m/s^2 to 90km/h.how long does it take to reach a new speed. How far does it travel during acceleration...the first answer I got is 2.2s and the other question I got 47m..i was checking to see if I was correct