A body of mas 3 kg and a body of mass 10 kg are simultaneously dropped from a height of - Physics -

Question

A body of mas 3 kg and a body of mass 10 kg are simultaneously
dropped from a height of 14 9 m Calculate their momenta,their
potential energies and kinetic energies when they are 10 m above
the ground Please give the final answer also ITS URGENT

Kabir Tomer · Accepted Answer

Let the oblect of mass 10 kg be A and the object of mass 3 kg be
B
Formulae =
g = 9 8
P E = mgh
P (momentum) = mv
K E = mv2/ 2
v2 of both A & B (it does not depend on mass) =
u2 + 2as
OK so P E of A =
10 kg * 10 m * 9 8 m/s2
= 980 joule
P E of B =
3 kg * 9 8 m/s2 *10 m
= 294 joule
v2 = 0 + 2 * 9 8 m/s2 * (14 9 - 10) m
v2 = 96 04 m/s = 96 m/s (rounded)
v = (root 96) m/s = 9 7979 m/s = 9 8 m/s (rounded)
K E of A =
10 kg * 96 m/s * 1/2
= 480 joule
K E of B =
3 kg * 96 m/s * 1/2
= 144 joule
P of A =
10 kg * 96 m/s
= 960 kg m/s
P of B =
3 kg * 9 8 m/s
= 29 4 kg m/s

A body of mas 3 kg and a body of mass 10 kg are simultaneously dropped from a height of 14.9 m.Calculate their momenta,their potential energies and kinetic energies when they are 10 m above the ground. Please give the final answer also.ITS URGENT.