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Elza [17]
3 years ago
5

How far can a person run in 15 minutes if he runs at an average speed of 16 km/hr?

Physics
1 answer:
anygoal [31]3 years ago
3 0

Answer:

4km

Explanation:

15 minutes is 1/4 of an hour.

1/4 of 16 is 4.

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Answer:d

Explanation:

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azamat

Answer:

not really

Explanation:

pangea took million of years to separate. Years by Years the continents move. for example The two continents are moving away from each other at the rate of about 2.5 centimeters (1 inch) per year. And there movent is due to the activity beneath the earths crust. The plates are moved by currents in the magma at the very surface of the earths mantle , which then in turn cause things like earthquakes and volcanic eruptions.

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A block of mass 2 kg slides down a frictionless ramp of length 1.3 m tilted at an angle 25o to the horizontal. At the bottom of
marin [14]

Answer:

Diagrams in pictures

Explanation:

Using energy I can get

m g h = 1/2 m v^2

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(H= 1,3m sin25)

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And

X= v t +1/2 a t^2

Knowing v=2,32 m/s and x= 1,3 m

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a= 6,21m/s2

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I can get the force of the box when it collides with the spring

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The force the spring makes on the box then is

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To make the two diagrams I need the functions of time when the box slows down

I use the same two equations

V= a t

And

X= v t + 1/2 a t^2

Being now 2,32 my initial velocity and 0 my final velocity, and my distance 0,24 m.

I get there the time t=0,0689 seconds and the acceleration a= -33,67 m/s2 (negative because it's slowing down).

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Diagrams and equations are in the pictures

7 0
3 years ago
Why does water feel cool when it evaporates
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Different kinds of electromagnetic waves are identified by<br> their -?-
const2013 [10]

Answer:

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