Ask a Doubt
Request a call back

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

CBSE Class 11-science Answered

how to solve this
question image
Asked by sumityadv5665 | 24 Dec, 2022, 14:36: PM
answered-by-expert Expert Answer
Coefficient of restitution e of collision is ratio of relative velocity u after impact  to the relative velocity v before impact .
 
e = v / u
 
if the ball is dropped from height H = 10 m , velocity u  when the ball just hits the ground ,
or just before impact  is given as
 
 
begin mathsize 14px style u space equals space square root of 2 space g space H end root end style
After impact , if the ball is raised to a  height h = 2.5 m , velocity v after impact  is given as
 
begin mathsize 14px style v space equals space square root of 2 space g space h end root end style

Then coefficient of restitution  e is
 
begin mathsize 14px style e space equals space v over u space equals space square root of h over 10 end root space equals space square root of fraction numerator 2.5 over denominator 10 end fraction end root space equals space 0.5 end style
 
Answered by Thiyagarajan K | 24 Dec, 2022, 15:00: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
a car travels first half a distance between two places with speed of 40 km/hr and the rest with the speed of 60 km/hr. Find average speed
Asked by sulthanxx | 08 Jul, 2024, 19:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
how option 2
question image
Asked by tkanmani022 | 11 Jun, 2024, 20:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
derive an expression for the velocity of the particle at the end point.
Asked by annpurnasharma1010 | 19 May, 2024, 21:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
the question
question image
Asked by rajeshabirami27 | 07 May, 2024, 16:31: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A train starts from a station with a constant acceleration of 4 m/s2. Two seconds later another train passes the same station on the same line and in the same direction with a constant velocity. Find the velocity if the collision is first averted
Asked by yatin1043 | 06 May, 2024, 14:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Q17. The velocity time relation of an electron starting from rest is given by v = kt where k = 6m / (s ^ 2) Calculate the distance traversed in 2 sec. 122
Asked by om636694 | 04 Mar, 2024, 21:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
state and prove law of conservation of energy in case of a freely falling bady
Asked by dhanapolla | 28 Jan, 2024, 10:40: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
if the linear momentum of a body is increased by 10% what will be the percentage change in it's kinetic energy
Asked by santoshyadav6673633 | 26 Jan, 2024, 16:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
obtain equations of motion for constant acceleration using calculus method
Asked by klvnsnthl | 25 Dec, 2023, 19:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
what is elevators
Asked by neerajchaurasiya651 | 10 Dec, 2023, 21:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Are You a Teacher or a Parent Seeking Customised Tests? Click here
×