Why is the following situation impossible? A freight train is lumbering along at a constant speed of 16.0 m/s. Behind the freight train on the same track is a passenger train traveling in the same direction at 40.0 m/s. When the front of the passenger train is 58.5 m from the back of the freight train, the engineer on the passenger train recognizes the danger and hits the brakes of his train, causing the train to move with acceleration 23.00 m/s2. Because of the engineer’s action, the trains do not collide.

Q: An airplane in level flight travels horizontally with a constant eastward acceleration of  8.40…

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Q: You are on a train that is traveling at 3.0m/s along a level straight track. Very near and parallel…

A: Draw the schematic diagram of the system.

Q: A swimmer who can consistently keep the same pace to cover 50 meters in 8.41 seconds sets out to…

A: Given: Speed of current of river vrg=2.94 m/s Swimmer maintain pace to cover 50 m. in 8.41 s.

Q: In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a…

A: Let AB is first interval and after the pit BC is second interval.

Q: A Ford passes a Toyota on the road (both vehicles are traveling in the same direction). The Ford…

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Q: Traffic shock wave. An abrupt slowdown in concentrated traffic can travel as a pulse, termed a shock…

A: Solution:-

Q: The plane starts from rest (V=0 m/s) when t, =8.0 s. The plane accelerates down the runway and at…

A: Given, Initial velocity, u=0m/s Final velocity , v=110 km/h=110×100060×60=30.55 ms Initial time,…

Q: A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. The cart…

A: Given data :-  x1 = 0 m , u = +6.7 m/s x2 = +13.6 mtherefore displacement s = x2 - x1 = 13.6 m

Q: A toy rocket has an engine that causes it to accelerate upwards at a rate of 3.50 m/s². It is…

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Q: While traveling at 89.52 km/h, a driver drops her cell phone on the floor of the car.  She reaches…

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Q: A car A and car B are travelling in the same direction at 60 kph on a straight highway, parallel to…

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Q: You stand at the edge of a 22.0 m high cliff and throw a stone straight down with a speed of 8.00…

A: Initial velocity, u = 8 m/sFinal velocity, v = 22.3 m/s

Q: A dog slips out of its collar while going for a walk and runs away at full speed.  By the time the…

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Q: Nathan is piloting a boat due south down the Murray River at a speed of 7.0m/s. At the same time…

A: The diagram showing the motion of the boats is given below. Take the north direction to be pointing…

Q: A Ford passes a Toyota on the road (both vehicles are traveling in the same direction). The Ford…

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Q: isitive physics student and mountain climber climbs a 49.0-m-high cliff that overhangs a calm pool…

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Q: motorcyclist runs with a constant speed of 36.0 m/s as he passes in front of a patrol car parked by…

A: Given Data : The speed of the motorcyclist is given as vm=36.0 ms The acceleration of the patrol car…

Q: A Ford passes a Toyota on the road (both vehicles are traveling in the same direction). The Ford…

A:

Q: A student is walking with a constant speed of ??1meters per second along High Street and sees a…

A: Given:Speed of student = v1 m/sDistance between student and puddle = d1 mDistance between student…

Q: A Ford passes a Toyota on the road (both vehicles are traveling in the same direction). The Ford…

A: Answer Ford speed = 35.4 m/s Toyota speed = 12.2 m/s Distance = 114.8 m

Q: A driver is traveling 18.0 m/s when she sees a red light ahead. Her car is capable of decelerating…

A: Given u=18m/s (initial velocity of car) t1=0.380 s (time for driver to hit the brakes) Distance…

Q: A cyclist due east accelerates at a constant 3.5.0m/s2 after leaving a sign-post. At the time, t=0…

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Q: A cheetah is crouched 20 m to the east of a vehicle . Attime t = 0 the cheetah begins to run due…

A: Velocity is assigned to an object in motion, and it is a vector quantity whose magnitude is the rate…

Q: X-O 10.0 m 21. Assume, for the sake of argument, that no collision occurs. Starting at t=0, what…

A: Given:- A student drives a car with the initial constant velocity u1 = 24.6 m/s along the straight…

Q: The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of…

A: Given,             Zig-Zag constant speed, v = 20 μm/s             Other data in the graph

Q: A car is traveling west at 22.5 m / s when it turns due south and accelerates to 37.5 m /s, alt…

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Q: Amtrak's 20th-Century Limited is en route from Chicago to New York at 120 km/h when the engineer…

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Q: At the instant the traffic light turns green, a car starts with a constant acceleration of 2.31…

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Q: You are arguing over a cell phone while trailing an unmarked police car by 27.0 m. Both your car and…

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Q: A Boeing 747 "Jumbo Jet" has a length of 64.5 m. The runway on which the plane lands intersects…

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Q: ow far is the tractor in front of you when you finally stop?

A: initial speed u = 23.6 m/s  acceleration a = - 7.2 m/s2  final speed v = 0

Q: You are waiting at a traffic light on Manchester Expressway. At the instant the traffic light runs…

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Q: Two bikers are cycling from the Greater Toronto Area to Kingston. The first biker, Merckx, started…

A: Two bikers Merckx and Froome are cycling from the Greater Toronto Area to Kingston. The first biker,…

Q: motorcycle starts at t = 0 from rest at x = 0 (the origin) and moves along a straight path (x-axis)…

A: Acceleration a1 = +2.8 m/s2 accelkeration in second case a2

Q: magnitude and direction of the bird’s acceleration

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Q: An airport terminal has a moving sidewalk to speed passengers through a long corridor. Larry does…

A: Given data The time required by larry to walk through the corridor is tl = 180 s. The time required…

Q: Ferrari and a Lamborghini are travelling in the same direction at 60.0 kph on a straight highway,…

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Q: A straight section of a small river has a steady current of 2.0 km/h. Two docks on the same side of…

A: a) The Bob’s time to reach the dock can be determined as, Here, v, d, and t represent Bob’s speed,…

Q: While driving at 45.0 mi/hr (20.1 m/s) on a straight portion of Route 9 West, Randi notices that the…

A: initial velocity = V0=  20.1m/s final velocity = V = 0 m/s displacement = S= 60 m acceleration = a =…

Q: A truck, stolen by Dora the Explorer is initially stopped 10.0 m from the base of a building. Peppa…

A: Initial height (h) = 22 m final height (h') = 3 m

Q: A Lockheed Martin F-35 Lightning II jet takes off from an aircraft carrier with a runway length of…

A: Given:- The length of the runway = 107 m takeoff speed = 77 m/s  Acceleration is 4.8 m/s2  at θ=23o…

Q: You are driving along the highway at a steady speed of 90 km/h when another car decides to pass you.…

A:

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.