1. if the same ball is thrown two different times and the second time the ball is thrown faster, which time will the ball have a higher kinetic energy?

a. the first time
b. the second time
c. it remains the same

2. a 15 kg table was pushed at an acclerated rate of 3 km/s (squared). this was pushed over a distance of 25 meters. whats the amount of work done on the table? explain.

( open ended )

What is a good example of instantaneous speed

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)