Question

93. Two bodies of same
are thrown vertically
upward from the surface of earth with velocity 4
m/s and 6 m/s respectively. The ratio of maximum
height attained by them will be consider g
= 10m/s
a)2:3
b) 4:9
c) 2:5
d) 4:7​

Answer 1

Answer:

(b) 4:9

Explanation:

maximum potential energy = maximum kinetic energy

$mgh = \frac{1}{2} m {v}^{2}$

since the mass is the same it will be cancelled on both sides

for the first body:

10h = 1/2 x 4^2

h = 8/10

for the second body:

10h = 1/2 x 6^2

h = 18/10

ratio:

8/10 : 18/10

8 : 18

4 : 9