A ditch 2.5 m wide crosses a trail bike path (Fig 3.36). An upward incline of 15o has been built on the approach so that the top of the incline is level with the top of the ditch. What is the minimum speed a trail bike must be moving to clear the ditch? (Add 1.4 m to the range for the back of the bike to clear the ditch safely.)
Answer to relevant QuestionsA ball rolls down a roof that makes an angle of to the horizontal (Fig. 3.37). It rolls off the edge with a speed of 5.00 m/s. The distance to the ground from that point is two stories or 7.00 m. (a) How long is the ball in ...A student strolls diagonally across a level rectangular campus plaza, covering the 50-m distance in 1.0 min (Fig. 3.25). (a) If the diagonal route makes a angle with the long side of the plaza, what would be the distance ...A boat that travels at a speed of 6.75 m/s in still water is to go directly across a river and back (Fig. 3.38). The current flows at 0.50 m/s. (a) At what angle(s) must the boat be steered? (b) How long does it take to ...A shopper in a mall is on an escalator that is moving downward at an angle of 41.8o below the horizontal at a constant speed of 0.75 m/s. At the same time a little boy drops a toy parachute from a floor above the escalator ...A 75.0-kg person is standing on a scale in an elevator. What is the reading of the scale in newtons if the elevator is (a) At rest, (b) Moving up at a constant velocity of 2.00 m/s, and (c) Accelerating up at 2.00 m/s2?
Post your question