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A roller coaster vehicle has a mass of 500 kg when fully loaded with passengers. (a) If the vehicle has a speed of 20.0 m/s, what is the force of the track on the vehicle at the lowest point of the track? (b) What is the maximum speed the vehicle can have at point B, the highest point on the track, for gravity to hold it on the track?
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
A 8.50-kg block of ice, released from rest at the top of a 1.41--long frictionless ramp, slides downhill, reaching a speed of 2.71 at the bottom. What is the angle between the ramp and the horizontal
Give the force exerted on the bag, to validate your reply.
A small package rests on the horizontal dashboard of a car. If ?s = 0.302, what is the minimum acceleration of the car
An athlete executing a long jump leaves theground at a 30° angle and travels 6.80 m. If this speed were increased by just5.0%, how much longer would the jump be
A ten pound car wheel has a moment of inertia of 0.52 kg m2. How much torque is required to stop the wheel in 43.21 s?
by trial and error a frog learns that it can leap a maximum horizontal distance of 1.2 m. if in the course of an hour
A 3.00 kg block starts from rest at the top of a 29.0 degree incline and slides 2.00 m down the incline in 1.65 s. Find the frictional force acting on the block
A gas cylinder holds .10 mol of O_2 at 150 degrees Celsius and a pressure of 3.0atm. The gas expands adiabatically until the pressure ishalved.
In an experiment on standing waves, a mechanical vibrator drives a string. Both ends of the string are fixed. The distance between the fixed ends is 80.0 cm. how much mass is hanging over the pulley
the head of the hammer m1.5kg moving at 4.5 ms strikes a nail and bounces back with the same speed after an elastic
The positions at a, b and c are (40,450), (112,380), (600,150). Calculate the angles of Ufinal and Uinitial. Are the angles significantly different
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