Two cars move in the same direction, if the speed of the first car is 40km/h and the speed of the second car is 60km/h. Calculate the relative speed of the second car relative to observer: a. Standing on the ground
b. Passenger in the first car

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

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot