CBSE Class 11-science Answered
A ball at rest is dropped from a height of 10 m. It loses 25% of its kinetic energy in striking the ground. Find the height to which it bounces. Give the reason of loss of kinetic energy.
Asked by Topperlearning User | 09 Jul, 2014, 10:36: AM
Expert Answer
Potential energy lost by the ball = Kinetic energy gained by the ball = mgh
On bouncing upward, the ball lost 25% of its kinetic energy and remaining 75% changes back to potential energy.
Let the ball bounce back to height h', then
The loss in kinetic energy of the ball is due to the heat produced by air friction.
Answered by | 09 Jul, 2014, 12:36: PM
Concept Videos
-
Work, Energy and Power
This video explains conservative forces and the work done by conservative f... -
Work, Energy and Power
This video explains non-conservative forces, work done by them and the rela... -
Work, Energy and Power
This video contains practice questions on conservative and non-conservative...
CBSE 11-science - Physics
Asked by Harshhacker2580 | 04 May, 2020, 05:30: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:23: AM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:26: AM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:29: AM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:33: AM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:36: AM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:38: AM
ANSWERED BY EXPERTCBSE 11-science - Physics
Asked by Topperlearning User | 09 Jul, 2014, 10:43: AM
ANSWERED BY EXPERT
