Question
Question: A projectile is fired at 30<sup>o</sup> with momentum p. Neglecting friction, the change in kinetic ...
A projectile is fired at 30o with momentum p. Neglecting friction, the change in kinetic energy when it returns to the ground will be
A
Zero
B
30%
C
60%
D
100%
Answer
Zero
Explanation
Solution
According to law of conservation of energy, projectile acquire same kinetic energy when it comes at same level.