5 questions
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1.Consider a partially elastic collision where some energy is lost due to heat. If object A, initially moving at speed 33.8 m/s and having mass 9.5 kg collides with object B, initially at rest and having mass 13.3 kg, such that object A is still moving forward at speed 6.1 m/s after the collision, then how much energy was lost?
2.An object of mass 129.3 kg sits atop a frictionless ramp of height 4.1m. After being released from rest from the top of the ramp, the object accelerates to the bottom of the ramp and then encounters a patch of ground with a coefficient of friction 1.94. How far does the object slide on this patch of ground before coming to a halt? (answer in metes to 1 decimal place)
3.A 16.7 kg mass moves eastward at speed 20.1 m/s. A 22.2 kg mass moves at speed 15.7 m/s directed at 49.8 degrees south of west. The two masses collide and stick. What is the magnitude of the final velocity of the combined mass system? (answer in m/s to 1 decimal place)
4.An object of mass 45.0 kg has initial velocity 26.3 m/s when it is at height 136.5 m. Neglecting air resistance, determine the velocity when the object is at height 58.0 m (answer in metes to 1 decimal place)
5.An object of mass 32.8 kg is pushed by a horizontally directed 695.4N force and ramp to height of 2.9m. If the ramp is at an incline of 24.1 degrees and has a coefficient of friction 0.5, then what is the total work done? (answer in KJ to 2 decimal place)
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