A locomotive (engine) pulls a series of wagons. Which is the correct analysis of the situation?

A locomotive engine approaches a railway station and whistes at a frequency of 400 Hz. A stationary observer on the platform observes a changes of 40 Hz. As the engine passed across him. If velocity of sound is 330 m/s. The speed of the engine is

There are a few children in your class who make errors. Which of these is most likely to be your analysis of the situation?

A locomotive engine without wagons can go 24 miles an hour and its speed is diminished as the square root of the number of wagons attached with 4 wagons its speed is 20 miles an hour. Find the maximum number of wagons with which the engine can move.

Which is the fastest mode of locomotion ?

Which is the fastest mode of locomotion ?

Three wagons, each of mass m are being pulled by an engine exerting a froce F on the lead wagon. What is the fore exerted on the last wagon by the middle wagon?

A locomotive engine without wagons can go 35 km per hour and its speed is diaminished by a quantity which varies as the square root of the number of wagons attached , with 9 wagons its speed is 20 km per hour . Find the least number of wagons which the engine can move.