Analyze a situation involving a collision by combining momentum conservation with either Newton's laws and kinematics or work and energy.
Jack D. Ripper flipped out after his Health bar on a Minds On Physics mission dropped to 0% for the third time. Outraged by the futility of his efforts, he flings a 18.7-gram pencil across the room. The pencil lodges into a 231.0-gram Sponge Bob doll which is at rest on a countertop. Once in motion, the pencil/doll combination slide a distance of 12.2 cm across the countertop before stopping. The coefficient of friction between the doll and the countertop is 0.272. Determine the speed at which the pencil is moving prior to striking Sponge
Pre-Coll'n Pencil Speed
m/s
Mr. Chowder is doing a ballistic pendulum demonstration for his Block 2 Physics class. He fires 8.82-g bullet into a 0.533-kg block of wood hanging at rest by strings from the ceiling. The bullet lodges in the wood and the combination swings upward like a pendulum to a height of 14.4 cm above its lowest position. Calculate the initial speed of the bullet.
Initial Speed of Bullet
A physics student hurls a 352-gram ball directly into a 2.05-kg box which is at rest on a tabletop. (He's not mad ... he's just doing a lab.) The baseball strikes the box with a pre-impact speed of 33.5 m/s. The box is filled with towels to help absorb the blow and effectively catch the ball. The coefficient of friction between the box and the table is 0.673. Determine the distance which the ball and box slide across the table after the collision.
Distance
m
A 1.8-g Nerf dart is fired vertically at a speed of 22.4 m/s into a stationary 60.6-g tissue box. The dart lodges into the box and the combo move upward along a vertical guide wire. How high (in cm) will the combination rise after the collision assuming the dart embeds in the box?
Maximum Height
cm
A 1.6-g Nerf dart is fired horizontally into a 74.4-g tissue box resting on a tabletop. The dart lodges into the box and the combo slides 0.403 m along the tabletop. The coefficient of friction between the tissue box and the tabletop is 0.390. What was the speed (in m/s) of the dart immediately before impact?
Pre-Coll'n Dart Speed
Avery is watching cartoons on the Nostalgia channel and a scene from the Tarzan toon reminds him of Physics. He created this problem and wants you to solve it:
The 75.2-kg Tarzan uses a 5.41-m vine to swing from a tree to rescue 55.2-kg Jane whose life is endangered by a poisonous snake. The vine starts horizontal when Tarzan begins his rescue. After rescuing Jane, the two continue to swing in a pendulum-like motion. To what maximum height will the two swing before losing all their kinetic energy?
A 2.00-kg mass is given an initial velocity by a spring-loaded mechanism on a frictionless surface. This mass impacts a 3.00-kg mass sitting on the edge of the table. The 2.00-kg mass ends up moving backwards at 1.37 m/s. How far from the base of the 1.20-meter-high table does the 3.00-kg mass land? The spring constant is 418 Newtons/meter and the spring is initially compressed 0.167 meters.
Dist. From Table's Edge