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Q1. If a proton is accelerated from rest through a potential difference of 1200 V, find its final velocity. The proton mass = 1.67x 10^ -27 Kg.

Q2. A 42.0 kg ball is suspended from a steel wire of length 6.01 m and radius 2.00 mm. By how much does the wire stretch?

Q3. A golf ball strikes a hard, smooth floor at an angle of θ = 31.6°, rebounds at the same angle. The mass of the ball is 0.043 kg, and its speed is 45m/s just before and after striking the floor. What is the magnitude of impulse applied to the golf ball by the floor?

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