Q. A grass hopper finds that he can jump a maximum horizontal distance of 1 m. With what speed can be travel along the path if he speeds a negligible time on the ground
A) $9.8\ ms^{- 1}$
B) $4.42\ ms^{- 1}$
C) $2.21\ ms^{- 1}$
D) $3.13\ ms^{- 1}$
Explanation
(d) It spends negligible time on earth $ie$, it performs projectile motion
Here maximum range $R_{\max} = 1\ m$
$\frac{u^{2}}{g} = 1$
$u^{2} = 1 \times 9.8$
$u = \sqrt{9.8} = 3.13\ ms^{- 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.