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A gymnast is bouncing on a trampoline. On theupward part of the motion, the mat of the trampoline pushes on thegymnast with a nonconservative force over a distance of0.300m. After leaving the mat, the 55.0- kg gymnast risesinto the air for an additional 2.00 m before falling backdown. What average force does the mat exert on the gymnast?
A moving body undergoes uniform acceleration while travelling in a straight line between points X, Y and Z. The distances XY and YZ are both 40m. The time to travel from X to Y is 12s and from Y to Z is 6s.
In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year
A 0.159 kg toy is undergoing SHM on the end of a horizontal spring with force constant 310 N/m. Find the total energy of the object at any point in its motion
two objects are moving in the xy plane . object a has a mass of 3.5 kb and has a velocity Va of 5.3 m/s at an angle of 30 degrees from the x-axis and object b has a mass of 1.9 kg, What is the total momentum of the system
The radius of Venus's orbit is 0.72 times that of Earth's orbit. How much stronger is the Sun's gravitational field at Venus than at the earth.
A man on a railroad platform attempts to measure the length of a train car by walking the length of the train and keeping the length of his stride a constant 82 cm per step. Determine the length of the train car
An astronaut on the Moon drops a rock straight downward from a height of 1.50m. what is the speed of the rock just before it lands
An iron bolt of mass 70.0 g hangs from a string 35.2 cm long. The top end of the string is fixed. Find the magnetic force on the bolt
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. How long after being released does the stone strike the beach below the cliff
A ball is thrown horizontally with a speed of Vo = 20.0 m/s from the top of a building of height h = 42.1 meters. What is the angle below the horizontal made by the velocity vector of the ball
Approximation the force a person should exert on a string attached to a 0.130 kg ball to make the ball revolve in a horizontal circle of radius 0.600 m.
A 10.0 g lead bullet at 23 degrees C slames into a stone wall. Assuming no loss of energy to the environment, how fast must the bullet be traveling
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