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An astronaut and his gear (mA = 84.0 kg) are at rest with respect to his shuttlecraft (mS = 10,000 kg).
The astronaut and the shuttlecraft are initially separated by a distance of 12.0 m. If the astronaut moves farther away from the shuttlecraft to a distance of 23.0 m, what is the change in gravitational potential energy for the astronaut's huttlecraft system?
A lovesick lad wants to throw a bag of candy and love notes into the open window of his girlfriend's bedroom 10.0 m above. At what velocity should she throw the bag
Sam, whose mass is 75 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 200 N and a coefficient of kinetic friction on snow of 0.1. Unfortunately, the skis run out of fuel after only 10 s. What is Sam's top speed? ..
A pendulum Bob has a mass of 0.750 kg and is on a pendulum arm of length 1.00 m. What is speed of the mass when it reaches its lowest point.
Find the difference between the heights the objects will be at two seconds later. How are these objects moving in regards to one another?
Mars rotates on its axis once every 24.8 hours, its mass is 6.42×1023 kg and its radius is 3.37×106 m. Estimate the maximum speed that an astronaut can walk on the surface of Mars
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +16.6 m/s in a time of 34.3 s, What is the tension in the hitch that connects the trailer to the car
Stones are thrown horizontally with the same velocity from the tops of two different buildings. Find the ratio of the height of the taller building to the height of the shorter building
a rectangular thin plate of mass M and sides of length a= 2m and b= 3m, Find the components, along the principle axes of the plate, of the torque acting on the plate
A 10kg block is set moving with an initial speed of 6 m/s on arough horizontal surface. If the force of friction is 20N,approximately how far does the black travel before it stops
Determine the angular momentum of a hollow spinning sphere when its angular speed is 20 rad/s. The rotational inertia of the sphere is 0.02 kg.m2
The heaviest invertebrate is the giant squid, which can have a weight of about 2.3 tons spread out over its length of 60 feet. What is its weight in newtons
A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron
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