Physics, 30.10.2019 02:31 alondrabdiaz586
You are testing a new amusement park roller coaster with an empty car of mass 120 kilograms. one part of the track is a vertical loop with radius 12.0 meters. at the bottom of the loop (point a) the car has speed 25.0 meters per second and at the top of the loop (point b) it has speed of 8.0 meters per second. as the car rolls from point a to point b, how much work is done by friction?
Answers: 1
Physics, 21.06.2019 23:30
In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door
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Physics, 22.06.2019 03:00
Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.
Answers: 2
Physics, 22.06.2019 05:30
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
You are testing a new amusement park roller coaster with an empty car of mass 120 kilograms. one par...
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