A 5kg mass moving at 15 m/s collides with a 2kg stationary(0 m/s) mass. After the collision, both the 5 kg and 2kg mass move off in the same
direction. If the 2 kg mass is moving at 25 m/s, what is the speed of the 5
kg mass?

This is the substance(s) formed in a chemical reaction.

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_