Question

A car moving at 32 km/h [N] accelerates for 8.2 s
to a velocity of 65 km/h [N]. Calculate the average
acceleration of the car.

Answer 1

Let's write down the given values:

u (initial velocity) = 32km/hr ≈ 9m/s

t = 8.2s

v (final velocity) = 65km/hr ≈ 18m/s

And we need to find the average acceleration a,

So I think we can solve this using the suvat equations:

One of them is: v=u+at

We have the required values so we can use that equation

Now just substitution and subject of the formula:

v=u+at

a= v-u/t

a= 9 - (9÷8.2)

a ≈ 8m/s²

Answer: 8m/s²