Question: In a 500 m stretch of a river the speed of
In a 500-m stretch of a river, the speed of the current is a steady 5.0 m/s. How long does a boat take to finish a round trip (upstream and downstream) if the speed of the boat is 7.5 m/s relative to still water?
Answer to relevant QuestionsA moving walkway in an airport is 75 m long and moves at a speed of 0.60 m/s. A passenger, after traveling 25 m while standing on the walkway, starts to walk at a speed of 0.50 m/s relative to the surface of the walk-way. ...If the flow rate of the current in a straight river is greater than the speed of a boat in the water, the boat cannot make a trip directly across the river. Prove this statement. A hockey puck slides along a horizontal ice surface at 20.0 m/s, hits a flat vertical wall, and bounces off. Its initial velocity vector makes an angle of 35o with the wall and it comes off at an angle of 25o moving at 10.0 ...In Exercise 36, what if the elevator is accelerating down at 2.00 m/s? In exercise 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 car coasts (engine off) up a 30o grade. If the speed of the car is 25 m/s at the bottom of the grade, what is the distance traveled by the car before it comes to rest?
Post your question