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a ball with a mass of 0.73 kg travelling at 4 m/s strikes a second ball elastically at rest with a mass of 0.47 kg what will be the veloity of both object after collision?
A 500g particle has velocity vx = -5.0m/s at t = -2s. Force Fx = (4-t^2)N is exerted on the particle between t = -2s and t = 2s. What is the particle's velocity at t = 2s
A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. Calculate the final speed of the wire
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of 4.0 N starting from rest. What is the speed of the sack after Sam has pushed it a distance of 20 cm
A krypton laser produces a cylindrical red laser beam 2.0 in diam with 2.0 of power. What is the light intensity on a wall 2.5 away from laser.
question1the force vector a has a magnitude of 91.0 newtonrsquos and points due east. the force vector b has magnitude
As a projectile moves in its path, is there any point along the path where the velocity and acceleration vectors are (a) perpendicular to each other? (b) Parallel to each other?
A skydiver is falling downward through the air. He weighs 241.5 pounds. There is an upward force of air friction opposing his fall. What is the upward force of air friction
A bicyclist of mass 75 kg ( including the bicycle) can coast down a 4.0 degree hill at a constant speed of 10 km/h. Pumping hard,the cyclist can descend the hill at a speed of 30 km/h.
How fast is the top of the tree moving (in m/s) just before it hits the ground? Model the tree as straight, rigid rod, and ignore friction and air resistance.
A light rod of length 1.8 m has two point masses of mass 2 kg attached at either end. If the spring constant is 3.7 Nm.rad-1, what is the period of the resulting motion
Ashley (65 kg) and Ryan (80 kg) ride their motorcycles (100 kg) at a speed of 15 m/s in a spherical metal cage with a diameter of 10m, What is the normal force on Ryan
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology and some basic physics. What is the radius of the arc of the teardrop at the top
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