Ptolemy life is probably my most recommenced
At the highest point: kinetic energy is 0 due to the speed is 0
So the total mechanical energy is 20
Assume no frictions present, then the mechanical energy is conserved
So at the lowest point, kinetic energy = mechanical energy - potential energy
Answer will be 20 - 0.5 = 19.5 J
I think you can just sub the values in? unless the qn is asking for smth else?
Can neither be created or destroyed.
True yes TRUE
Science may also be defined as the study of surroundings
