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3 years ago

Calculate the speed of a train that traveled 810 kilometers in 9 hours.

Physics

1 answer:

Naya [18.7K]3 years ago

8 0

Answer:

90 kilometers an hour

let me know if I'm wrong

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3 years ago

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2 years ago

What is velocity change divided by time change?

Luda [366]

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3 years ago

Starting from rest, the distance a freely-falling object will fall in 0.50 second is?

FinnZ [79.3K]

Answer:

1.23 m

Explanation:

The vertical distance covered by a free-falling object starting from rest in a time t is

$y=\frac{1}{2}gt^2$

where

g = 9.8 m/s^2 is the acceleration due to gravity

In this problem, we have

t = 0.50 s

So the distance covered is

$y=\frac{1}{2}(9.8 m/s^2)(0.50 s)^2=1.23 m$

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3 years ago