Answer: B
Explanation:
Resonance- the result of resonance is always a LARGER VIBRATION :)!!
To see if the project is actually going to work. Also called prototypes
Let's assume that ground level is the height 0 meters. The change in potential energy is going to be gravitational potential energy, which is given by PE=mgh.
ΔPE=mgh-mgy
=mg(h-y)
=50(28-0)
=1400 J
B.) The moon
There you go.
