A stone of mass 2.0kg is thrown vertically upward with a velocity of 20.0 ms-1, calculate the initial kinetic energy of the stone
A
200J
B
400J
C
800J
D
1600J
Verified Correct Answer: B.
Physical Principles & Numerical Solution
K.E = \(\frac{1}{2}Mv^2 = \frac{1}{2} \times 2 \times 20^2 = 400J\)
Source: Myschool Past Questions Archive (Record #34654)