If a #2 kg# object is constantly accelerated from #0m/s# to #18 m/s# over # 5 s#, how much power musy be applied at #t= 4 #?

1 Answer
Feb 22, 2016

If the accerelation is constant then so must be the force, as force=mass times acceleration (#F=m*a#).

Explanation:

Acceleration:
#a=(Deltav)/t=(18-0)/5=3.6m//s^2#

Force:
#F=m*a=2*3.6=7,2kg*m//s^2=7.2N#