A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, taken as the xy plane. The 5.60-kg puck has a velocity of 2.00î m/s at one instant. Eight seconds later, its velocity is (6.00î + 6.0ĵ) m/s. (a) Assuming the rocket engine exerts a constant horizontal force, find the components of the force. (i+j) (b) Find its magnitude.

a student is skateboarding down a ramp that is 5.82 m long and inclined at 24.1% with respect to the horizontal. the initial speed of the skateboarder at the top of the ramp is 3.75 m/s. neglect friction and find the speed at the bottom of the ramp.

Needs Complete typed solution with 100/% accuracy.

A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.875 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.350 and he exerts a constant horizontal force of 297 N on the crate. A man pushes a crate labeled m, which moves with a velocity vector v to the right, on a horizontal surface. The horizontal surface is textured from the right edge of the crate to a horizontal distance ℓ from the right edge of the crate. (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude ______N direction  ---Select--- (b) Find the net work done on the crate while it is on the rough surface._____ J(c) Find the speed of the crate when it reaches the end of the rough surface._____m/s