Compare acids and bases. Be able to explain their properties and give examples

1 answer:

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Acids are the EXACT OPPOSITE of bases, but they're both still deadly. Base (or basic/alkali) is something in everyday thinks like toothpaste, milk, etc. But too much intake of bases can harm you, and if water has too much alkali, the fish living in it can die. Acidic, on the other hand, is very effective. Acids are usually in oranges, sodas, even your stomach has acids in it. Too much acids can rot your teeth, can cause "heartburn", even can give you a stomachache.

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If Ms. Ramirez drops a watermelon from the top of the second-floor fire escape outside her room, and it takes 1.5 seconds to hit

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The velocity of the watermelon as it hits the ground is 14.715 m/s.

Given the data in the question;

Since the Watermelon was dropped from rest,

Initial velocity of the Watermelon; $u = 0m/s$

Time taken for the Watermelon to hit the ground; $t = 1.5s$

We know that, Acceleration due to gravity; $g = 9.81 m/s^2$

Now, we determine the velocity of the watermelon as it hits the ground which is the final velocity.

From the First Equation of Motion:

$v = u + at$

Now, under gravity, acceleration ''a" will Acceleration due to gravity; $g = 9.81m/s^2$ , "v" is the final velocity, "u" is the initial velocity and "t" is the time taken.