# 296 - Mechanics part 1 Questions Answers

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?

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.

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?