A truck accelerates from a speed of 5.6 m/s to 8.1 m/s in 5.0 seconds. The average rate of acceleration during this 5.0-seconds is approximately-
0.5m/s/s
1.1 m/s/s
1.6 m/s/s
2.7 m/s/s

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?