What height does a frictionless playground slide need so that a 35 kg child reaches the bottom at a speed of 5.3 m/s

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.