A car accelerates from rest to 95 km/h in 5 seconds, what is the average acceleration of the car in m/s2

The average acceleration of the car is 5.2778

Explanation:

The acceleration of an object is a magnitude that indicates how the speed of the object changes in a unit of time. That is, acceleration relates changes in velocity with the time in which they occur.

The expression for the calculation of the acceleration is:

In this case:

First, it is convenient to express the change in velocity in units of m/s, where 1 h = 3,600 s and 1 km = 1,000 m.

So, replacing in the definition of acceleration:

acceleration= 5.2778

The average acceleration of the car is 5.2778

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.