65. If Jill was traveling at 300 miles in 4 hours due South what was his velocity in miles per second, a) 75 miles per hour due south
c) 5 miles per second due south
b) .02 miles per second due south d) 1 mile per hour due south

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence

A200 g lead frying pan gains 2000 joules of heat. what is the change in temperature