1. The top of a student's head is approximately circular with a radius of 8.90 cm. a) what force is exerted on the top of the student's head by normal atmospheric pressure? b) How much power is expended by student if he/she is moving at 95km/hr?

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?

What properties of a moving object are used in determining the object's energy of motion