Question

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)

Answer 1

The answer is 1100kg.

Step-by-step 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 :

`a = (v - u)/(t)`

`a = (27 - 0)/(4.5)`

`a = 6m {s}^( - 2)`

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

`F = m * a`

`6600 = m * 6`

`m = 6600 / 6`

`m = 1100kg`