Physics Homework Solutions

A 400 g air-track glider collides with a spring at one end of the track

I have a problem just like it in my physics book, but the mass is different. In my book it is 600 g and the answer is 0.2 s. See attached file for full problem description with diagram and units. A 400 air-track glider collides with a spring at one end of the track. The figure 1 shows the glider's velocity and the for ...continues

On a frictionless horizontal air table...

(See attached file for full problem description with units) --- On a frictionless horizontal air table, puck A (with mass 0.369 ) is moving toward puck B (with mass 0.249 ), which is initially at rest. After the collision, puck A has velocity 0.116 to the left, and puck B has velocity 0.645 to the right. a.) What wa ...continues

Far in space, where gravity is negligible...

(See attached file for full problem description with units and diagram) --- Far in space, where gravity is negligible, a 475 rocket traveling at 95.0 fires its engines. The figure shows the thrust force as a function of time. The mass lost by the rocket during these 30 s is negligible. (see attacement) a.) Wh ...continues

A 20 g ball of clay traveling east at collides with a 30 g ball of clay traveling 30 south of west

What are the speed of the resulting 50 g blob of clay? See attached file for full problem description with units.

Block 1 moves along a frictionless air track...

(See attached file for full problem description with units and diagram) --- Block 1, of mass = 3.30 , moves along a frictionless air track with speed = 31.0 . It collides with block 2, of mass = 15.0 , which was initially at rest. The blocks stick together after the collision A.) Find the magnitude of the total ...continues

3 problems related to work done and conservation of energy are solved.

(See attached files for full problem description with units and diagrams --- The figure is the velocity-versus-time graph for a 3.90 object moving along the x-axis. Determine the work done on the object during each of the five intervals AB, BC, CD, DE, and EF. --- Part A Use work and energy to find the speed of the 2. ...continues

3 Physics Problems

(See attached files for full problem description with units and diagrams) --- A package of mass is released from rest at a warehouse loading dock and slides down a 3.0-m-high frictionless chute to a waiting truck. Unfortunately, the truck driver went on a break without having removed the previous package, of mass 2 , from ...continues

Three Problems: 10.6, 10.3, Circling ball

(See attached file for full problem description with equations and diagrams) --- A boy reaches out of a window and tosses a ball straight up with a speed of 10 m/s. The ball is 20 m above the ground as he releases it. Use energy to find Part A The ball's maximum height above the ground. Part B The ball's speed as it pass ...continues

Mechanics: 3 Probles on conservation of energy and momentum. Collisions are discussed in detail.

(See attached files for full problem descriptions with diagrams, units and proper equations) --- Let two particles of equal mass collide. Particle 1 has initial velocity , directed to the right, and particle 2 is initially stationary. Part A If the collision is elastic, what are the final velocities and of particles 1 ...continues

A skier of mass 69.3 kg is pulled up a slope by a motor-driven cable.

A skier of mass 69.3 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him a distance of 59.0 m up a 30.4° slope (assumed frictionless) at a constant speed of 1.97 m/s? (b) A motor of what power is required to perform this task?

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