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Physics: Post your doubts here!

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No Kinetic energy is lost in a perfectly elastic collision

Therefore Speed of approach = Speed of projection

Momentum AND total energy is ALWAYS conserved
oh thankyou so much. i guess i didnt read the elastic collision part carefully
 
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Is it true that for a projectile not travelling in air, the angle of launch is equal to the angle of strike?
 
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Hey,
Can someone help me out with the following mcqs all are from 2002 summer paper.I have written the answers too.
upload_2015-3-25_14-50-22.png
Ans D

upload_2015-3-25_14-50-52.png
Ans B

upload_2015-3-25_14-51-12.png
Ans C

upload_2015-3-25_14-51-24.png
Ans A

upload_2015-3-25_14-51-39.png
Ans C

upload_2015-3-25_14-51-53.png
Ans C

Thank you very much!:)
 
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