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Charra [1.4K]
3 years ago
11

A train travels 98 kilometers in 4 hours, and then 61 kilometers in 3 hours. What is its average speed?

Physics
1 answer:
IrinaK [193]3 years ago
6 0
Speed (velocity)=distance/time

V1=98km/4hr=24.5km/hr
V2=61km/3hr=20.3km/hr

Average speed (velocity)=total velocity/ number

Average speed (velocity)=44.8km/hr/2=22.4

So the average speed is 22.4km/hr
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A uniform disk of mass M = 4.9 kg has a radius of 0.12 m and is pivoted so that it rotates freely about its axis. A string wrapp
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(A) 2.4 N-m

(B) 0.035kgm^2

(C) 315.426 rad/sec

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3 0
3 years ago
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