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A space vehicle is traveling at 4450 km/h relative to the Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 102 km/h relative to the command module. The mass of the motor is four times the mass of the module. What is the speed (km/h) of the command module relative to Earth after the separation?
A cat is trying to jump onto a countertop that is 1m tall from 0.3m away. The cat's initial jump speed (magnitude of the total initial velocity) is 10m/s
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. What must be the horizontal distance between the saddle and limb when the ranch hand makes his move
A light, rigid rod of length l = 1.00 m joins two particles, with masses m1 = 4.00 kg and m2 = 3.00 kg, at its ends. Determine the angular momentum of the system
a 11.00 kg block starts from rest at the top of a 25.0 meter long 30.0 degree incline. Its kinetic energy at the bottom of the incline is 1347.5 J
A plastic bag is filled with nitrogen at atmospheric pressure and 27.0 oC. How large a volume of nitrogen (in m3) is required
A photon of wavelength 0.1800 nm strikes a free electron that is initially at rest, What is the energy of the photon (in eV) after it has scattered from the electron
A trap door, of length and width 2.35 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
How many electrons should be removed from an initially uncharged spherical conductor of radius 0.29 m to produce a potential of 6.8 kV at the surface
A lunar lander is landing on the moon from 5.0 m above the surface, with a downward speed of 0.8 m/s. With the engine off, it is in free fall. find the speed of the lander just before it hits the surface
Suppose a ball player throws a ball at an angle of 55 degrees and a speed of 25 m/s. Next to the ball thrower, What is the distance the ball is thrown
You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle.
A car is driving directly north on the freeway at a speed of 106 km/h and a truck is leaving the freeway driving 91 km/h in a direction that is 40° west of north. What is the velocity of the truck relative to the car
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