What is the force needed to accelerate a 10 kg object at 2 m/s2?
A. 5N B. 2N C. .2N D. 20N

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same