Two students are riding bicycles in different directions. Student A is riding her bicycle north at 10 m/s. Her mass, including her bicycle, is 60 kg. Student B is riding his bicycle south at 8 m/s. His mass, including his bicycle, is 65 kg. What is the total momentum, magnitude and direction of the system of the two cyclists?

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Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?