Question

A 1 kg mass falls from a height of 10 m into a sand box cluster what is the speed of the mass before hitting the sand box? if it travels a distance of 2cm into the sand box before coming to rest. what's the average retarding force?​

Answer 1

Answer:

Potential energy of ball will convert to KE

SO, mgh=

2

mv

2

⇒v=

2gh

=

2×9.8×10

=14 m/s

When object will pass through sand it will loose its KE to overcome the resisting force by sand.

Now Fs=

2

mv

2

=98⇒F=

0.02

98

=4900N

Explanation:

Thanks ❤❤

Answer 2

Potential energy of ball will convert toKESO,mgh=2

mv

2

⇒v= 2gh

=

2×9.8×10

=14 m/s

When object will pass through sand it will loose its KE to overcome the resisting force by sand.

Now Fs= 2mv2=98⇒F= 0.0298

=4900N