A 70g rubber ball is thrown with a speed of 10 m/s at a floating 8g balloon. If the balloon is knocked forwards at 40 m/s, how fast is the ball moving after the collision? (Round to the nearest tenths place)

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

The heliocentric and the geocentric models of the solar system included these central principles