PHY 101 GENERAL PHYSICS I EXAM WITH COMPLETE SOLUTIONS VERIFIED A+ RATED

PHY 101 GENERAL PHYSICS I 2014/2015 Use the following information where necessary: Acceleration due to gravity g = 9.80 m/s2 =32 ft/s2 Universal gravitational constant G = 6.673 × 10-11Nm2/kg2 Radius of the earth = 6,400 km 1 horsepower hp = 746 W 1. If S is the distance and t is time, the dimensions of C4 and C3 in the equation: are L and T-1 An anti-aircraft shell is fired vertically upwards with an initial velocity of 500 m/s. Neglecting air resistance, compute: 2. The maximum height it can reach is 3. The time taken to reach the height is 4. The instantaneous velocity at the end of 60 s i.e 88m/s downwards 5. When will its height be 10km A ball is thrown vertically downwards from the edge of a high cliff with an initial velocity of 25ft/s 6. How fast is it moving after 1.5s 7. How far has it gone after 1.5s A pulley of radius 5 cm is turning at 30 rev/s and slows down uniformly to 20 rev/s in 2 seconds. Calculate the 8. Angular acceleration of the pulley rev/s2 9. Angle through which it turns in this time 10. Length of the belt it winds A baseball is thrown with an initial velocity of 100 m/s at an angle of 300 above the horizontal. Calculate the: 11. Time of flight 12. Maximum Range A body of mass 1 kg moves in a vertical circle of radius 0.5m with a velocity of 5m/s. Calculate the: 13. Tension at the top of the rope 14. Tension at the bottom of the rope 15. Compute the mass of the earth, assuming it’s a sphere of radius 6370 km kg