- A preliminary stage of a spacecraft was to place it in a parking orbit 190km above the
Earth's surface. Determine:
(a) the gravitational intensity at this height;
(b) the speed of the spacecraft, and;
(c) the time to complete one orbit.

How would doubling the made of an object change the objects potential energy

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?