Q. A cricket ball is hit at $30{^\circ}$ with the horizontal with kinetric energy $E_{k}$. What is the kinetic energy at the highest point?
A) $E_{k}/2$
B) $3E_{k}/4$
C) $E_{k}/4$
D) Zero
Explanation
(b) $E_{k}^{'} = E_{k}\cos^{2}{30{^\circ}} = \frac{3E_{k}}{4}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.