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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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Answer:

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The corresponding relation for diffraction is

d sin(\theta) \approx \lambda,

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From this relation we clearly see that the diffraction angle \theta is directly proportional to the wavelength  \lambda of light—longer the wavelength larger the diffraction angle.

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At each of the designated points, rotate the given vector to indicate the direction of the force exerted by the water on either
GrogVix [38]

Answer:

The direction of the force at A and B is perpendicular to the walls of the container.

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Answer:

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3 years ago
A gray kangaroo can bound across level ground with each jump carrying it 9.1 m from the takeoff point. Typically the kangaroo le
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Answer:

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