A car can go from 0m/s to 27 m/s in 4.5 seconds. If a net force of 6,600 N acted on the car , what is its mass? (Hint: solve for acceleration 1st)

The answer is 1100kg.

Explanation:

First, you have to find the acceleration using the formula, a = (v-u)/t where v is final speed, u is initial speed and t is time :

Next, you have to apply force formula, F = m×a where m is mass :

connect the batteries in series and hope

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.