04:11Spring gun momentum problem: spring with known compression launches a ball to accelerate a cart.Zak's Lab96
06:48Physics momentum explosion with three objects: find the speeds given directions and total energy.Zak's Lab175
04:041D perfectly inelastic collision with a slide to a stop. Conservation of momentum then work-energy.Zak's Lab136
05:48Momentum and energy explosion problem: find the percent energy in each mass explosion problem.Zak's Lab147
Multiple ChoiceA 300g bullet is fired horizontally into a 10-kg wooden block initially at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.6. The bullet remains embedded in the block, which then slides 35 m along the surface before stopping. What was the initial speed of the bullet?57182Has a video solution.
Textbook QuestionFred (mass 60 kg) is running with the football at a speed of 6.0 m/s when he is met head-on by Brutus (mass 120 kg), who is moving at 4.0 m/s. Brutus grabs Fred in a tight grip, and they fall to the ground. Which way do they slide, and how far? The coefficient of kinetic friction between football uniforms and Astroturf is 0.30.181Has a video solution.
