Ask a Doubt
Request a call back

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

CBSE Class 9 Answered

Answer 57
question image
Asked by md775016 | 25 Feb, 2018, 18:59: PM
answered-by-expert Expert Answer
Formula to be used :- v2 = u2+2gh, where u is intial velocity that is zero, g is acceleration due to gravity and h is height in metre
 
v = square root of(2gh) = square root of(2×9.8×5) = √98 m/s
Kinetic energy = (1/2)mv2 = 0.5×0.2×98 = 9.8 J
Answered by Thiyagarajan K | 26 Feb, 2018, 12:13: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Physics
why the pin sink and ship float?
Asked by nsandhyabati | 11 Jul, 2024, 21:41: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
an athlete complete one round of a circular track of diameter 200 m is 40 second what will be the distance covered and the displacement at the end of 2 minute and 20 second
Asked by mintinmaurya | 25 Jun, 2024, 15:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
motion lesson
Asked by kamakshi.tulasi | 10 Jun, 2024, 09:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
what is meant by displacement
Asked by nittavijayalaxmigayatri | 08 Jun, 2024, 12:36: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
A bus starts from waste moves with the uniform acceleration of 1 m/s² for 5 minutes then what will be the speed acquired and the distance travelled by the bus.
Asked by varshuparekh | 03 Jun, 2024, 18:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
car increases its velocity from 20 m per second to 40 m per second in 10 second find its acceleration?
Asked by ashishtyagi642 | 17 May, 2024, 06:34: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
An object of mass 1kg is falling from the height h=10m.calculate a) the total energy of an object at h=10m b) potential energy of the object when it is at h=4m c) kinetic energy of the object when it is at h=4m d) what will be the speed of the object when it hits the ground
Asked by mailtoparvathyprajith | 08 Feb, 2024, 18:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
1)state energy conversion takes place in hydroelectric power plants? 2)an object of mass 1kg is falling from a height of 10 m. Calculate i) the total energy of object at h=10m ii) Potential energy of an object when h=4m   3)Name energy transfers which occurs when a)an electri bell rings b)someone speake into a microphone c)there is a picture on television screen d)A torch is on  
Asked by mailtoparvathyprajith | 08 Feb, 2024, 12:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Why do we feel light on our feet when standing in a swimming pool with water up to our armpits ?
Asked by mailtoparvathyprajith | 08 Feb, 2024, 12:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify.
Asked by mailtoparvathyprajith | 06 Feb, 2024, 21:50: 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
×