Multiple ChoiceYou are practicing jumping as far as you can. In one attempt, you run and leave the floor with 7 m/s directed at an unknown angle. What maximum height do you reach if your speed at that point is 5 m/s? Ignore air resistance.4724Has a video solution.
Multiple ChoiceA toy gun is mounted on a tabletop. It shoots a small plastic ball at 6.0m/s. The ball leaves the toy gun at an angle of 24° above the horizontal, and a height of 83cm above the ground. How fast is the ball travelling when it hits the ground? Use energy concepts.177
Multiple ChoiceCalvin uses a catapult to launch a foam football at Susie. If the ball leaves the catapult at a height of 2.0m and is moving at 15m/s when it strikes the ground (he missed), how fast was the football moving when it left the catapult? Ignore air resistance.132
Multiple ChoiceA spring-loaded toy gun shoots a 3.0g plastic ball straight up into the air. From the position of the ball when the gun is cocked, with the spring compressed, to the maximum height the ball reaches, is 2.5m. If the spring was compressed 2.0cm, what is the spring constant of the spring? Ignore air resistance.178
