Calculate the momentum of a wooden model train car that has a mass of 5 kg and moves with a velocity of 10 m/s.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)