Amars rover has a mass of 500 kg. the acceleration due to gravity in mars is about 3.7 m/s^2 and the coefficient of kinetic friction for the rover on the surface is 0.4. how much force must the rover’s engine exert in order to travel at a constant speed?

740 N

Explanation:

Friction equals normal force times coefficient of friction.  On level ground, normal force equals weight.

Constant speed means no acceleration.  Sum of the forces:

∑F = ma

F − mgμ = 0

F = mgμ

F = (500 kg) (3.7 m/s²) (0.4)

F = 740 N

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..