Questions
A man standing on the roof of a house of height h throws one particle vertically downwards and another particle horizontally with the same velocity u . The ratio of their velocities when they reach the earth's surface will be
detailed solution
Correct option is C
for particle projected vertically downwards v2= u2+2gh for the particle projected horizontally horizontal velocity vx= u and vertical velocity vy after a height h is 2gh tolal velocity v=vx2+vy2 v2=u2+2ghTalk to our academic expert!
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A body of mass 1 kg is moving along positive x-axis with velocity 2 m/s. At t = 0, a constant force, parallel to positive y-axis, starts acting on the body and after 5 sec, speed of the body is found to be 4 m/s. Then work done by the force in 5 sec is
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