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A particle of mass 4.0 kg initially moving with a velocity of 2.0 m/s collides elastically with a particle of mass 6.0 kg initially moving with a velocity of -4.0 m/s.
What are the velocities of the two particles after the collision?
You kick a 2.3 kilogram football straight into the air with a force of 50 Newtons. If your foot traveled 150 centimeters when kicking the ball calculate the work done on the football
Runner A who is 5 mi west of a flagpole is running east at a 6mi/h. Runner B who is 4 mi east of the flagpole is running west at 5mi/h. Where will they meet
temperatures are often measured with electrical resistance thermometers. suppose that the resistance of such a
A mixture of 150 g of ice and 300 g of water is at 0 degressC. How many joules f heat energy must be transferred to brind thismixture to a final temp of 75 degress C
A mass (M=2kg) is placed in front of a spring with k=900N/m, compressed d=50cm. The spring is released, shooting the mass forward from A to the spring's equilibrium position at B, What is the velocity of the mass at point C
A point source generating a spherical sound wave at 50Hz, Calculate the amplitude of the particle velocity at r=3m from the source
In a head-on collision, a car stops in 0.22s from a speed of 19m/s. What force is applied to the driver by his seat belt
question a at room temperature what is the strength of the electric field in a 12-gauge copper wire diameter 2.05 mm
A 45 kg woman stands up in a 60 kg canoe of length 5 meters.She walks from a point 1 meter from one end to a point 1 meter fromthe other end. how far does the canoe move during this process
According to Car and Driver, an Alfa Romeo going at 70 mph requires 177 feet to stop. Assuming that the stopping distance is proportional to the square of velocity, find the stopping distances required by an Alfa Romeo going at 35 mph and at 140 m..
A plane is flying southeast at 200 km/h. Suddenly, it encounters wind heading 40 degrees north of east at 35 km/h. What is the planes new velocity
A satellite is in a circular orbit about the earth at a distance of one earths radius above the surface. What is the speed of the satellite
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