An arrow strikes an apple on top of a student’s head, and the apple with the arrow embedded in it falls to the ground. This scenario is an example of: A. An elastic collision

B. An inelastic collision

C. Both of these

The ability to make things happen is also called a. heat b. force c. matter d. energy

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.

Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?