Why does ice float on water? a. the temperature of ice is lower than the temperature of water b. the temperature of water and ice are the same c. the density of ice is less than the density of water d. the density of ice is greater than the density of water

What kind of simple machine is a catapult?

Name two kinds of practical electric pumps.

A6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 3.0 seconds. what is the speed of the cart at the end of this 3.0 second interval? (1) 1.5 m/s (3) 3.0 m/s (2) 5.5 m/s (4) 7.0 m/s