Heather in her corvette accelerates at the rate of (3.00i - 2.00j) m/s2, while jill in her jaguar accelerates at (1.00i + 3.00j) m/s2. they both start from rest at the origin of an xy coordinate system. after 5.00 s,

a) what is heather’s speed with respect to jill?


b) how far apart are they?


c) what is heather’s acceleration relative to jill?

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.