Under the influence of a force, an object of mass 4 kg accelerates from 3 m/s to 6 m/s in 8s. How much work was done on the object during this time?
1 Answer
Dec 31, 2016
54 J
Explanation:
We can use Newton's 2nd Law to find the magnitude of the force:
The acceleration a is the rate of change of velocity:
The work done is the force x the distance travelled in the direction of the force.
To find the distance travelled during this time we can use: