Question

28. A mass of 10 kg falls from a height of 50 cm. Calculate (i) Velocity of the body
energy of body when it just reaches the ground level. Does the velocity depe
mass of the particle?

Answer 1

Answer:

1)intial velocity =0

use v2-u2 =2as

v=√2as

v=√2×10×50

v=31.7cm

2)no

Answer 2

Explanation:

the initial velocity u = 0 m per second

height from where the object thrown = 50 cm

from Newton third equation of motion,

2 gh = v^ - u^

2× 9.8 × 50 = v^ - 0

980 = v^

or, v^ = 980

v = √980

v = 31.30 cm per second