Explain how the property of density is applied and used in the real world
2 answers:
Answer:
Explain how the property of density is applied and used in the real world
<em>One well-known application of density is determining whether or not an object will float on water. If the object's density is less than the density of water, it will float; if its density is less than that of water, it will sink. ... In fact, submarines dive below the surface of the water by emptying their ballast tanks.</em>
Explanation:
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Answer:
v = 6.25 m/s
Explanation:
Given that,
A man runs 650 m east and then turns and runs 850 m west. This takes him 240 seconds.
Let east is positive and west is negative
Average velocity = total displacement/total time taken
Total displacement = final psoition - initial position
D = -850 - 650 = -1500 m
So,
So, 6.25 m/s is the average velocity of the man.
Answer:
40m (40m east)
Explanation:
The fist move is 70m east, and east is the positive direction so the truck initially is at +70m.
The second move is 120m to the west, since east is the positive direction, west must be the negative direction, this means the truck now is at:
The third move is 90m to the east, again, this is the positive direction, so the new position is:
The truck is at + 40m, so it ended up 40m away from its initial position and this is the resultant dispacement.