Average velocity over a given time interval is the distance traveled divided by the time:
Answer:
The net force should be of a magnitude of 64 N
Explanation:
We use Newton's second Law for this:

which for our case gives:

Answer:
149,916J
Explanation:
Pneumonic device: Kevin is half-mad and very square
this translates to: KE=(1/2)mv^2 !!
KE=(1/2)(78)(62^2)
KE=(39)(3844)
KE=149,916 Joules
Stan looga
this is correct answer