Question

1) A racing car is travelling North-
It acceleration uniformly
a distance of 725m in los. If
it has an intial velocity of 10 m/s,
find its accelerations​

Answer 1

Answer:

First, we know that accelaration is constant so the rate of change of the velicity is a constant.

Second, what average velocity do we need to cover 725m in 10 seconds? 725m÷10s=72.5m/s.

Now, our initial velocity is 10m/s so

Average velocity is finalvelocity-initialvelocity divided by 2.

Finalvelocity = 2 x averagevelocity -initialvelocity = 135m/s.

Since acceleration is constant and we go from 10m/s to 135m/s in 10 seconds.

Acceleration = change in velocity ÷ change in time

=(135m/s — 10m/s)÷ 10s= 12.5m/s(2).