40. A train travels at a speed of 144 km/h. Its wheels per- fectly adhere to the rails (no sliding) and have a diame- ter d = 80 cm. How many turns do they do in one second, roughly? A. 8 B. 57 C. 32 D. 115 E. 16

40. A train travels at a speed of 144 km/h. Its wheels per- fectly adhere to the rails (no sliding) and have a diame- ter d = 80 cm. How many turns do they do in one second, roughly? A. 8 B. 57 C. 32 D. 115 E. 16

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section2.3: Acceleration

Problem 2.3CE: What is the average speed in mi/h of a person at the equator as a result of the Earths rotation?...

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

40. A train travels at a speed of 144 km/h. Its wheels per-
fectly adhere to the rails (no sliding) and have a diame-
ter d = 80 cm. How many turns do they do in one second,
roughly?
A. 8
B. 57
C. 32
D. 115
E. 16
1
34

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