A ball is dropped from a window and takes 1.6 seconds to reach the ground. Which of the following is the height of the window a) 8
b) 13
c) 16
d) 25

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy