What is change in the cars kinetic energy

Assignment Help Physics

Reference no: EM134854

Q1. A father (m = 92 kg) and son (m = 44 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have detached. How fast will the father be moving?

Q2. A roller coaster (399 kg) moves from A (2.89 m above the ground) to B (24.5 m above the ground). Two non-conservative forces are present: friction does -2.57 x 104 J of work on the car, and a chain mechanism does +5.27 x 104 J of work to help the car up a long climb. What is change in the car's kinetic energy KEf - KEo from A to B?

Reference no: EM134854

Questions Cloud

What was the mass of the ice cube : This magnetic field accelerates the electron in a circular motion. What is radius of the circle. The final situation is observed to be all water at 18°C. What was the mass of the ice cube.

What kinetic energy of the electrons removed from cathode : What are the velocities of the two people after the snowball is exchanged. What is the greatest kinetic energy of the electrons removed from the cathode by this light.

What impulse does an engine impart to the rocket : Determine the greatest vertical displacement of the pendulum (height). The mass lost by the rocket during these 30.0 is negligible. What impulse does an engine impart to the rocket?

What physical quantities can be represented by vectors : What is momentum of a truck speeding down the highway at a given instant? Discuss how the momentum is changed if the truck loses some of its cargo while maintaining the same velocity.

What is change in the cars kinetic energy : What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.

Find an angular velocity of the tire at the marker : Find an angular velocity of the tire at the marker. Find also the linear speed of the point of contact of the tire with the pavement at the marker.

What is the balls speed at the lowest point : Assume air resistance is negligible; from what height (in cm) above the compressed spring was the block dropped.

Calculate the period t and the tension in the string f : Calculate the period T and the tension in the string F as a function of the angle. Compute the moment of inertia of this system for an axis that passes through the combined center of mass and is perpendicular to the plane of the rings.

What is the magnitude of the average induced emf : The coil is flipped so its plane is vertical to the magnetic field in 0.050 s. What is the magnitude of the average induced emf.

User Account

All Pages