Acar has an initial velocity of 45m/s and a final velocity of 0m/s 9 seconds later.
a. what is the acceleration?
b. how far did they travel during the 9s?

Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Which planet do you think would be easiest for humans to colonize some day?