A particle moves with a velocity of $(5\hat{\mathrm{i}}-3\hat{\mathrm{j}}+6\hat{\mathrm{k}})$m/s under the influence of a constant force $\overrightarrow{F}=(10\hat{\mathrm{i}}+10\hat{\mathrm{j}}+20\hat{\mathrm{k}})$ N. The instantaneous power applied to the particle is:

A pump ejects 12,000 kg of water at a speed of 4 m/s in 40 s. The average rate at which the pump is working is:

1.  0.24 kW

2.  2.4 W

3.  2.4 kW

4.  24 W