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Bumek [7]
3 years ago
13

You are trying to find out how high you have to pitch a water balloon in order for it to burst when it hits the ground. You disc

over that the balloon bursts when you have pitched it to a height of 11 m. With what velocity did the balloon hit the ground? The acceleration of gravity is 9.8 m/s^2. The positive direction is up, so the velocity when it hits is negative.
Mathematics
1 answer:
weqwewe [10]3 years ago
7 0

Answer:

v=-1.46 \ m/s

Step-by-step explanation:

So, as balloon reaches its maximum height i.e. 11 m , its velocity become 0.

Therefore, v_{top}=0 \ m/s.

It is given that acceleration due to gravity should be taken as , g=-9.8 \ m/s^2.(because it direction is down)

Now it is also given that upward direction is positive and downward direction is negative. So velocity should be negative.

Using equation of motion,

v_{final}^2 - v_{initial}^2 =2\times a\times displacement   .....eqn 1.

where , displacement = -11 m(because it displace towards down) and a=g=-9.8\ m/s^2

Putting these values in eqn 1 .

v_{final}^2-0^2 =2\times 9.8 \times 11

v = \pm1.46 m/s.

But as we know direction of velocity is downward.

Therefore, v=-1.46 \ m/s

where negative sign indicates its direction is downward.

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Answer:

Answer is 0.63 or .63 either way is the same and right!

Step-by-step explanation:

7.56/11(1+ for jamal) =0.63

Your welcome!

8 0
3 years ago
27 1/5 over 4/5 as a unit rate
REY [17]

Answer:

\frac{34}{1}  or 34

Step-by-step explanation:

we know that

To find the unit rate divide 27 1/5 by 4/5

but first

Convert mixed number to an improper fraction

27\frac{1}{5}=27+\frac{1}{5}=\frac{27*5+1}{5} =\frac{136}{5}

so

\frac{136}{5}:\frac{4}{5}=\frac{136}{4}=\frac{34}{1}

8 0
3 years ago
Represent m &lt; 3 on the number line. <br><br> (I’ll mark as brainliest if correct, thx)
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Answer:

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7 0
3 years ago
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Jackson bought 555 ounces of raisins for \$4$4dollar sign, 4.
Fynjy0 [20]

Answer:

Part a) The raisins cost $0.8 per ounce

Part b) 1.25 ounces

Step-by-step explanation:

<u><em>The correct question is</em></u>

Jackson bought 5 ounces of raisins for $4 dollars.

a) How much do raisins cost per ounce?

b) How many ounces of raisins can be bought for $1?

Part a)  How much do raisins cost per ounce?

we know that

To find out the unit rate divide the total cost by the total weight

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\frac{4}{5} =\$0.8\ per\ ounce

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Part b) How many ounces of raisins can be bought for $1?

we know that

The raisins cost $0.8 per ounce

using proportion

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3 years ago
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