# 299 - Mechanics part 1 Questions Answers

A perfectly elastic particle is projected with a velocity v on a vertical plane through the line of greatest slope of an inclined plane of elevation α.If after striking the plane, the particle rebounds vertically show that it will return to the point of projection at the end of time equal to?

ANS GIVEN - 6V/{g(1+8sin^2(α))^(1/2)}

**Asked By: ACE123**

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A force acts for 20 seconds on a body of mass 10 kg after which force ceases and the body describes 50m in the next 10 seconds . find the magnitude of the force?

**Asked By: KRITHI VIJ**

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A body first acceleration with alpha m/s^2 and from rest and then retards with beta m/s^2 to rest. The total distance covered is D. So find the total time taken . With only alpha,beta and d terms.

**Asked By: SACHIN KUMAR**

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The velocity of a particle is defined by Vx=100-t^(3/2) and Vy=100+10t-2t^(2) Where V is in m/sec and t is in seconds. The radius of curvature at the top of its path is?

**Asked By: DEN**

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