Question

4. A ball falls to the ground as shown below:
(1+1+1)
Ball at rest
А
Potential energy - 80 )
DOO
B
Kinetic energy = 48
Just before
С
hitting the ground
On the basis of the above diagram select the correct option from the given questions
(a) What is the kinetic energy of the ball at C?
(1) 48 )
(1) OJ
(h) 80 )
(iv)323
(b) What is the potential energy of the ball at B?
(1) 80 )
(1) 323
(iii) 48 )
(iv)
(c) Which law has been used in answering the questions?
(1) Law of conservation of mass
(u) Law of conservation of momentum
(iii) Newton's third law.
(iv) Law of conservation of energy​

Answer 1

Answer:

a. 80 J

b. 32 J

c. law of conservation of energy

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