A bicycle traveling at a speed of 19 km/h passes a person running at a speed of 8 km/h. From the point of view of a running person, what is the velocity of the bicycle
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Q: An airplane is flying at an altitude of 12 km at 100 m/s. What is the equivalent velocity of the…
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A: To explain : How will the starship travel once its engines are suddenly turned off ?
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A: D
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Q: Imagine that you are riding a bicycle with a velocity of 4.82 m/s E. A car passes you with a…
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Q: firework is shot out of a cannon 400 meters above ground at a speed of 30 m/s at a launch angle of…
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Q: A wrench dropped by a worker at the top of a skyscraper falls past Charlie at a speed of 20 m/s.…
A: Solution: Given that v = 20 m/s h = 15 m
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A bicycle traveling at a speed of 19 km/h passes a person running at a speed of 8 km/h. From the point of view of a running person, what is the velocity of the bicycle?
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- boy sees a deer run directly away from him. The deer is running with a speed of 20 mi/hr. The boy gives chase and runs with a speed of 8 mi/hr. What is the speed of the deer relative to the boy?Two cars are moving towards an intersection. One car is 150 meters north of the intersection and moving towards the intersection at 20 m/s, while the other is 180 meters west of the intersection and moving towards the intersection at 16 m/s. How rapidly are the cars approaching each other 4 seconds later?Jim is driving his car at 32m/s (72mi/h) along a highway where the speed limit is 25m/s (55mi/h). A highway patrol car observes him pass and quickly reaches a speed of 36m/s. At that point, Jim is 300m ahead of the patrol car. How far does the patrol car travel before catching Jim?
- A boy is inside a bus moving at 5.0 m/s toward east. He is walking at 1.0 m/s toward the front. What is the velocity of the boy as observed by another passenger waiting for the bus at a nearby bus stop?A swimmer travels at 0.8 m/s heading south across a small lake. At the same time, a second swimmer heads north from the opposite shore at a speed of 0.4 m/s. How wide is the lake if the two swimmers meet 12 min later?A bicycle traveling at a speed of 19 km/h passes a person running at a speed of 8 km/h. From the point of view of a running person, what is the velocity of the bicycle? A) 11 km/h 27 km/h 18 km/h D) 22 km/h
- A red train traveling at 20 m/s and a green train traveling at 40 m/s are headed toward one another along a straight, level track. When they are 950 m apart, each engineer sees the other's train and applies the breaks. The breaks decelerates each train at the rate of 1 m/s˄2. What is the speed (in m/s) of the green train at impact?I was standing on the side of a 10-m foot bridge, holding a ball while watching a car approaching the bridge at uniform speed. When the car was 15 meters away from where I was standing, the ball that I was holding slipped in my hand and the car arrived at the bridge when the ball hit the ground. What was the speed of the train? ( Assume that the final velocity of the ball is NOT zero)Moving sidewalks are installed every other 50 meters along the entire stretch of an airport walkway. These sidewalks move at a constant speed of 1 m/s. A lady passenger takes one of the sidewalks to go from one point to the next. If the passenger decides to go back using the same sidewalk at 1 m/s, how long will it take to reach her point of origin?
- A conveyor belt is used to send burgers through a grilling machine. If the grilling machine is 1.2 m long and the burgers require 2.8 min to cook, how fast must the conveyor belt travel? If the burgers are spaced 25 cm apart, what is the rate of burger production (in burgers/min)?In this exercise, an unmanned paper aircraft is sent straight down from the top of an office building at a speed of 25 m/s. It reaches the ground at a speed of 45 meters per second.What is the height of the building?How long did the object stay in the air before hitting the ground?A car moving in one dimension travels from point A to point B at an average speed of 40 km/h. It then reverses direction and moves from point B back to point A at 20 km/h. Its average speed (in km/h) over the entire trip is