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WorksheetsAP W-E and Conservation
Total questions: 10
Worksheet time: 9mins
When a 65 kg skydiver jumps from a plane at a height of 1105m, her speed steadily increases until air resistance provides a force that balances the force due to free fall. How fast is the skydiver falling at the moment when her kinetic energy is 704000J?
21661.53 m/s
147.17 m/s
22880.0 km/s
10830.76 m/s
An object is moving to the right with speed vi when a force of magnitude F is exerted on it. In which of the following situations is the object’s direction of motion changing and kinetic energy decreasing at the instant shown?
0.25 J
1.0 J
10 J
20 J
A pendulum is pulled to one side and released. It swings freely to the opposite side and stops. Which of the following might best represent graphs of kinetic energy (Ek), potential energy (Ep) and total mechanical energy (ET)
Which of the following is true for a system consisting of a mass oscillating on the end of an ideal spring?
The kinetic and potential energies are equal to each other at all times.
The maximum potential energy is achieved when the mass passes through its equilibrium position.
The maximum kinetic energy and maximum potential energy are equal, but occur at different times.
The maximum kinetic energy occurs at maximum displacement of the mass from its equilibrium position
Each of the boxes, with masses noted, is pulled for 10 m across a level, frictionless floor by the noted force. Which box experiences the largest change in kinetic energy?
