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On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. Immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.4 m/s in the direction 53.1° south of east. Use coordinates where the +x-axisis east and the +y-axis is north.
(a) What is the total kinetic energy of the two blocks after the collision (in joules)?
(b) What is the x-component of the total momentum of the two blocks after the collision? (Indicate the direction with the sign of your answer.)
(c) What is the y-component of the total momentum of the two blocks after the collision? (Indicate the direction with the sign of your answer.)
A plate carries a charge of -3.7 C, while a rod carries a charge of +1.9 C. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
A 250 kg weather rocket is loaded with 100kg of fuel and fired straight up. It accelerates upward at 32m/s2 for 34 s, then runs out of fuel. overlook any air resistance effects.
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A cube of ice is taken from the freezer at -8.7°C and placed in a 97 g aluminium calorimeter filled with 351 g of water at the room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of an ice cube.
Galileo's great-great-great grandchild stands at the top of a vertical tower 53.4 m tall with a Chianti bottle, What is the velocity of the bottle as it hits the ground, if it was just dropped from the tower
Is the collision completely elastic
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parachutist with a camera, both descending at a speed of 13 m/s, releases that camera at an altitude of 110-m.
Assume that we suddenly discovered that all these years we would be wrong about the distance from Earth to the Sun, and it is actually 10 percent greater than we would think. How would that affect our approximation of the distance to the Andromeda..
When the tire surface is rotating at the maximum speed of 12 m/s stone flies out of the tread. The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.8 N. suppose that only static friction supplies centripet..
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