A child with a mass of 30.0 kg is moving down a slide at a playground. The angle the slide makes with the ground is 60.0°, and the coefficient of friction between the child and the slide is 0.250. What is the frictional force on the child? You may want to draw a free-body diagram to help you solve the problem.

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?