Question

25 points!

A 6 kg object accelerates from 5 m•s to 25 m•s in 30 seconds. What was the net force acting on the
object? Give your answer in Newtons to one significant figure and without a unit.

(Show Work)

Answer 1

6N

Step-by-step explanation:

Given parameters:

Mass of object = 6kg

Initial velocity = 5m/s

Final velocity = 25m/s

Time = 30s

Unknown:

Net force acting on the object = ?

Solution:

From Newton's second law of motion:

Force = mass x acceleration

Acceleration is the rate of change of velocity with time

Acceleration =
`(Final velocity - Initial velocity )/(time)`

Force = mass x
`(Final velocity - Initial velocity )/(time)`

So;

Force = 6 x
`(25 - 5)/(30)` = 6N