A force of 45.0 N is applied to J jr. as he stands stationary at the edge of an ice rink. if he has a mass of 75.0 kg,what is his velocity after 4.00s?

Question

anonymous · Answer

$$ F=ma$$
and 
$$m=70.0 kg$$
so you can find J Jr's acceleration
$$a=\frac{F}{m}$$

So now you know both the initial velocity (Vi=0) and the time accelerated (t=4s) so you can use a kinematic to find the final velocity given acceleration and time.