For a given change in momentum, if the net force that is applied to an object decreases, what happens to the time interval over which the force is applied?

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

If you visited mount shasta city (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°c (81°f), what would be the air temperature at the summit of mount shasta (elevation 4200 m [14,000 ft.]) at that moment-assuming that the temperature conditions with altitude change at an average, or normal, lapse rate?