A ball of mass 4 kg is thrown vertically upwards with a velocity 20 m/s. Find its kinetic energy, potential energy and total energy at a point 15 m above the ground
Answers
Answered by
2
Answer:
40 J
Explanation:
K.E=
2
1
×m×v
2
K.E=0.5×0.2×20×20=40J
As it has 40 J at initial point as total energy, at some point X,P.E is maximum.
Total energy=P.E+K.E
40=P.E+K.E
As energy is conserved, total energy at point X also must be 40 J. For P.E to be maximum K.E must be zero.
Hence P.E=40J
We can come to the conclusion that it will have the maximum value at maximum height.
Similar questions