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A volcano erupts, and a chunk of hot magma is launched horizontally with a speed of 205 m/s from a height of 550 m. We can ignore air resistance.

A block is given an initial velocity up an inclined plane with friction. The block comes to rest before the end of the inclined plane. What is the sign of the work done by gravity as the block comes to rest on the inclined plane?

Explain the difference between mass and weight (in at least 2 sentences)

As you contract your muscle, which of the following events is occurring? All the kinetic energy is converted to potential energy. All the potential energy is converted to kinetic energy. Energy is being created. Heat is released.

A car moving at 10 m/s crashes into a large bush and stops in 1.3 m. Using the Work-Energy theorem, calculate the average force the seat belt exerts on a passenger in the car to bring him to a halt. The mass of the passenger is 70 kg.

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The impulse experienced by a body is equivalent to the body's change in A) velocity B) kinetic energy C) momentum D) force

Does the system's kinetic energy increase, decrease, or stay the same? or is there not enough information to tell?

How do inertia and centripetal force combine to keep an object moving in circular motion?

Compare and contrast the average kinetic energy of 0.5 L of coffee at 34°C, 0.5 L of coffee at 38°C, and 0.25 L of tea at 43°C.