Gujarat BoardEnglish MediumSTD 9ScienceWork, Power And Energy2 Marks
Question
A ball thrown vertically upwards returns to the thrower. How do the kinetic and potential energies of the ball change$?$
✓
Answer
Vertically upward. so the final velocity is $0.$ and gravitational force is $+\ g$. Then equations is $-\text{u}=\text{at}$ $\text{s}=\text{ut}+\frac{1}{2\text{at}^2}$ $-\text{u}^2=2\text{gs}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.