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Fofino [41]
3 years ago
11

The range is the horizontal distance from the cannon when the pumpkin hits the ground. This distance is given by the product of

the horizontal velocity (which is constant) and the amount of time the pumpkin is in the air (which is determined by the vertical component of the initial velocity, as you just discovered). Set the initial speed to 14 m/s, and fire the pumpkin several times while varying the angle between the cannon and the horizontal. For which angle is the range a maximum (with the initial speed held constant)?
Angle:
0
60
45
90
30
Physics
1 answer:
jarptica [38.1K]3 years ago
3 0

The answer is 45 degrees.  I am not doing a field experiment for you that involves a cannon and a day's work, for 5 points.

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How much work is done when you push a crate horizontally with 130
Harrizon [31]
Work= Force in the direction of displacement*displacement.

You know the force in the direction of displacement (horizontally) and the displacement. So,

W=130*11=1430 

Therefore, the work done is 1,430 Joules


3 0
3 years ago
If the mass of a
mixer [17]

Answer:

The final acceleration becomes (1/3) of the initial acceleration.

Explanation:

The second law of motion gives the relationship between the net force, mass and the acceleration of an object. It is given by :

F=ma

m = mass

a = acceleration

According to given condition, if the mass of a  sliding block is tripled while a constant net force is applied. We need to find how much does the acceleration decrease.

a=\dfrac{F}{m}

Let a' is the final acceleration,

a'=\dfrac{F}{m'}

m' = 3m

a'=\dfrac{F}{3m}

a'=\dfrac{1}{3}\times \dfrac{F}{m}

a'=\dfrac{1}{3}\times a

So, the final acceleration becomes (1/3) of the initial acceleration. Hence, this is the required solution.

5 0
3 years ago
3. A car travelling at 20. m/s stops in a distance of 40. m. What is its
KIM [24]

Answer:

It was a joke i was getting the answer

Explanation:

Be percent karen

4 0
3 years ago
If you poke a hole into a plastic bottle, and stick a straw in it, and then let the straw connect to a glass cup, and then blow
den301095 [7]
It was decrease because the water js going from one place to another
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