Ball a has a mass of 0.200 kilograms. ball a, traveling at a velocity of 2 meters/second in the +x direction, hits a stationary ball b of the same mass. after the collision, ball b bounces off at a positive angle with respect to the +x-direction. which statement is true for ball a if the collision is elastic?

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?