A sked is initially given a shove up a frictionless 23.0o incline. It reaches a maximum vertical height 1.22 m higher than where it started at the bottom. What was its initial speed?

A 10 kg barbell is rolling down a hill. There is no friction or air resistance acting on it, only the force of gravity. If it starts out moving 2 ms1, and ends up moving 7 ms1, then how much work does gravity do on it?

= 7.50 m. The figure below shows a box with a mass of m = 7.10 kg that starts from rest at point A and slides on a track with negligible friction. Point A is at a height of ha A MET 3.20 m 2.00 m m ha (a) What is the box's speed at point B (in m/s)? m/s What is the box's speed at point C (in m/s)? m/s (b) What is the net work (in J) done by the gravitational force on the box as it moves from point A to point C?

A sled is initially given a shove up a frictionless 26.0 incline. It reaches a maximum vertical height 1.50 m higher than where it started at the bottom. a) What was its initial speed?

A skier starts at the top of a frictionless slope and pushes off with a speed of 3.0 m/s. The elevation of the slope is 40 m. She skis down the slope to a valley with elevation 0.0 m and then glides to the peak of an adjacent slope that is at an elevation of 25 m. Calculate her speed at the second peak

The sledder shown in the figure starts from the top of a frictionless hill and slides down into the valley.  What initial speed Vi does the sledder need to just make it over the next hill?  Assume that the sledder reaches the very peak of the second hill at a very small speed like v=0.

An advertisement claims that a(n) 1600 kg car can accelerate from rest to 26 m/s in 8.4 s. Given: Unit conversion: 746 W/hp. What average power must the motor pro- duce to cause this acceleration, if we ignore friction and air resistance? Answer in units of hp. Answer in units of hp. Your response... PALETTE

A sled is initially given a shove up a frictionless 23 degree incline. It reaches a maximum verticle height 1.22 m higher than where it started at the bottom. What was the initial speed?