An initially stationary 21 kg object accelerates

Question

Solve the all parts of following question:

Question: An initially stationary 2.1 kg object accelerates horizontally and uniformly to a speed of 13 m/s in 3.0 s.

Part A: In that 3.0 s interval, how much work is done on the object by the force accelerating it?

J

Part B: What is the instantaneous power due to that force at the end of the interval?

W

Part C: What is the instantaneous power due to that force at the end of the first half of the interval?

W

I need help to find the instantaneous power due to that force at the end of the first half of the interval.