Two bumper cars colide into each other and each one bounces bach. wich of newton's laws is it ?

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction

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?

Acar traveling at 21 m/s starts to decelerate steadily. it comes to a complete stop in 13 seconds. what is its acceleration?