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Final Exam Review, part 1 Wednesday, December 10 Quiz: λ=?, Amplitude=?, f=? y(x) 8 6 4 2 0 0 -2 -4 -6 -8 5 10 15 20 25 3:64 • A quarterback passes the football downfield at 20 m/s. It leaves his hand 1.8 m above the ground at an angle of 300 above the horizontal. It is caught by the receiver exactly the same height above the ground. How far was the receiver from the passer? • Greatest height of the ball? 5:26 • A 4000 kg truck is parked on a 150 slope. What is the frictional force on the truck? • Make a diagram 5:26 • diagram N f 150 w f W sin(15) 0 f 4000*9.8*sin(15) 10,146 N N W cos(15) 0 N 4000*9.8*cos(15) 37864 N 4:19 • A car has a maximum acceleration of 5.0m/s2. What would be the maximum acceleration if the car is towing another car of the same mass? 5:49 • What thrust does a 200g model rocket need in order to have a vertical acceleration of 10.0 m/s2? 6:15 • A 1500kg car drives around a flat 200-mdiameter circular track at 25m/s. What are the magnitude and direction of the net force on the car? What causes this force? 6:24 • The centers of a 10kg lead ball and a 100g lead ball are separated by 10cm. What gravitational force does each exert on the other? 7:10 • What magnitude of F2 causes the net torque on the rod to be zero? F2 F1=20.0N 450 .5m 1m 7:15