A 0.5 kg hockey puck slides across the ice starting with a velocity of 5 m/s. The puck slides and slows for 100 meters under constant acceleration and then stops. a. What is the acceleration of the hockey puck? (.125 m/s2) b. What Kinetic Frictional Force is needed?(0.0625N) c. What is the co‐efficient of friction between the ice and puck?(.013) d. Recalculate a, b & c for a 1 kg hockey puck. (Does the weight change a or c?)

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?