Question

A body falls freely from rest. If the velocity

acquired is numerically equal to the displacement,

then the velocity acquired is

1) 9.8 m/s 2) 19.6 m/s

3) 29.4 m/s 4) 39.2 m/s​

Answer 1

Answer:

Correct option is

B

19.6 m/s

v

2

=u

2

+2as

a=g

∣v∣=∣s∣

u=0

v

2

=0

2

+2gv

v=2g

∣v∣=2g=2×9.8=19.6 m/s

2

Answer 2

Answer:

Refer to the attachment.

correct option is (2)