Mechanics | Relativity Answers

A particle projected from origin moves in x-y plane with a velocity v = 3i +6xj where i and j are the unit vectors along x and y axis. Find the equation of path followed by the particle

a box with the weight of 50N rests on a horizontal surface. a person pulls horizontally on it with a force of 10N and it does not move. to start it moving a second person pulls vertically upward on the box. if the coefficient of static friction is 0.4 what is the smallest vertical force for which the box moves?

a 250N force is directed horizontally as shown to push a 29kg box up an inclined plane(27degrees) at a constant speed. determine the magnitude of the normal force and the coefficient of kinetic friction.

a 3kg projectile is fired at an angle of 45 degrees. what is the magnitude of the force exerted on this projectile when its at it highest position in t he trajectory? neglect any effects of air resistance

a projectile is fired at an angle of 55 degrees above the horizontal with an initial speed of 35m/s. what id the magnitude of the horizontal component of the projectile's displacement at the end of 2s?

an astronomical object has its mass 4 times the mass of earth and radius half of the radius of earth. If acceleration due to gravity at earth is g, find its value at the surface of the astronomical object.

starting from rest a particle confined to move along a straight line is accelerated at a rate of 4m/s(squared). after 10 seconds how far will the particle have traveled?

A body dropped from the top of the tower clears 9/25th of the total height in its last second of flight.the height of the tower is ? (g=9.8m) and the answer is 122.5.

The initial velocity u of a bullet in penetrating a distance 's' through a target is reduced by u/n.how far will the bullet proceed through the target before coming to rest?

A police jeep is chasing with velocity 45km/hr,a thief in another jeep moving with velocity 153km/hr.police fires a bullet with muzzel velocity of 180m/s.what is the velocity with which it will strike the car of the thief?