Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

a man drops a 10kg rock from the top of a ladder. what is its speed just before it hits the ground? what is ita kinetic energy when it reaches the ground? (take g=10m/s-2)
Asked by | 30 Dec, 2011, 12:00: AM
Expert Answer
KE when it reaches the ground= initial PE
                                            =mgh=100h  if you dont know the height then you cannt find out the KE.
apply:v2=u2+2gh =2gh=20 h
Answered by | 02 Jan, 2012, 11:56: AM
CBSE 9 - Physics
Asked by pramodkumardalal711 | 18 Jun, 2022, 10:19: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by divyanshu.3082007 | 03 Feb, 2022, 05:21: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by topperlearningforcontent | 31 Jan, 2022, 10:14: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by tajbindarkaurs | 14 Nov, 2021, 10:19: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by atiquzzaman100 | 21 Oct, 2021, 01:35: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by kaziryan.05 | 19 May, 2021, 07:43: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by harikishortomar | 03 Jan, 2021, 10:52: PM
ANSWERED BY EXPERT
Get FREE Sample Mock Papers for Final Exams
Download Now
×