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QB3 -PROJECTILES and ANGULAR MOTION (a) A ceiling fan is rotating at 0.5 revs. When turned off it slows uniformly to a s
Posted: Tue May 24, 2022 10:38 am
by answerhappygod
- Qb3 Projectiles And Angular Motion A A Ceiling Fan Is Rotating At 0 5 Revs When Turned Off It Slows Uniformly To A S 1 (34 KiB) Viewed 7 times
QB3 -PROJECTILES and ANGULAR MOTION (a) A ceiling fan is rotating at 0.5 revs. When turned off it slows uniformly to a stop in 12 seconds. How many revolutions does it make in this time? (2 marks) (b) A ball is thrown at an angle of 35° with respect to the horizontal and with a speed of vo from the top of a vertical cliff. The ball is in flight for 6 s and hits the ground 40 m from the base of the cliff. Calculate: (i) the initial speed vo; (2 marks) (ii) the height of the cliff (2 marks) (iii) the resultant velocity of the ball just before it reaches the ground. (4 marks)