Mechanics | Relativity Answers

The acceleration of a body moving along x-axis is given by a=4x^3 ,where a is in m/s^2 and x is in metre.If at x=0 the velocity of body is 2m/s,then find its velocity at x=4 m.

I need someone to double check my math. So, here we go. I need to know how much energy it would take to move (or displace in a 4" tube) 13.6 gallons of water (or 114.6 lbs of water) vertically 6 inches in 1 second. Energy required will need to be in joules.

A boy is standing on a road , car throws a ball straight upwards . the car is moving with acceletration 1 m/s^2 ant the projectile velocity is 9.8 m/s .how far behind the boy will ball fall on the car ?

9.7545 gram of a substance occupies 3.12cm cube. express its density by keeping the significant figures

Man weighs 100kg hurries forward at 0.500 m/sec. the boat he is in weighs 155kg moves backward at some other velocity. WHat is that velocity?

what is centripetal force

resolve the force if 100n acting at an angle of 39° with the horizontal in 2 vertical and horizontal components

if the time of flight of a bullet over a horizontal range R is T, then the angle of projection with horizontal is?

An object moves in a quadrant of radius R from point A to B such that A & B lie on two ends of the quadrant & the force applied is always directed towards B. Find the work done.

when a body is thrown up to the roof of the room from bottom, another body is thrown from roof to bottom, height of roof is 100 m. at what distance both the bodies meet each other?