Velocity is height , speed is an object being propelled by force
Answer:
If the Earth absorbs more insolation from the sun than it radiates back, the Earth. warms
Current.A moving charge is an object that changes position to one particular obsever.
According to the conservation of mechanical energy, the kinetic energy just before the ball strikes the ground is equal to the potential energy just before it fell.
Therefore, we can say KE = PE
We know that PE = m·g·h
Which means KE = m·g·h
We can solve for h:
h = KE / m·g
= 20 / (0.15 · 9.8)
= 13.6m
The correct answer is: the ball has fallen from a height of 13.6m.