AP Physics C: Mechanics Final Review exam 2024

A driver in a car traveling at a speed of 26.8 m/s sees a deer 100 m away on the road. Calculate the minimum constant acceleration that is necessary of the car to stop without hitting the deer (assuming the deer does not move). - correct answer -3.6 m/s2 A basketball player can jump 1.6 m off the hardwood floor. With what upward velocity did he leave the floor? - correct answer 5.6 m/s Two stones are thrown from the top edge of a building with a speed of 20 m/s, one straight down and the other straight up. The first one hits the street in a time t1. How much later is it before the second stone hits? - correct answer 4s An object of what mass, acted upon by a net force of 20 N, will experience an acceleration of 10 m/s2? - correct answer 2 kg. A sled weighing 100 N is held in place on a frictionless 20 degree slope a rope attached to a stake at the top. The rope is parallel to the slope. What is the tension in the rope? - correct answer 34 N Two blocks are released from the top of a building. One falls straight down while the other slides down a smooth ramp. If all friction is ignored, which one is moving faster when it reaches the bottom? - correct answer They both will have the same speed. In propeller driven planes with two propellers, the propellers will rotate in opposite directions. Why is this? - correct answer To keep the plane from rotating due to the propeller's rotation. Which of the following are equivalent units for change in momentum? - correct answer N s kg × m/s