A glass rod is charged by triboelectric charging and 13 x 10^10 electrons removed. What is the charge on
the rod?

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

When you turn on a battery-operated device, an electrical circuit is

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped