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zhuklara [117]
3 years ago
9

Lolz plz help me with this it’s due soon

Physics
1 answer:
White raven [17]3 years ago
7 0

Answer:

Explanation:

c slowing down since the distance is going down and the time is moving up.

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An underground cannon launches a cannonball from ground level at a 35 degree angle. the cannonball is shot with an initial veloc
user100 [1]

Answer:

Time = 1.75[s]; Distance traveled = 21.5 [m]; Max height = 15 [m]

Explanation:

First, we have to break down the velocity vector into the X & y components.

(v_{x})_{0} = 15 * cos( 35)= 12.28[m/s]\\(v_{y})_{0} = 15 * sin( 35)= 8.6[m/s]\\\\

To find the time t that lasts the ball of cannon in the air we must use the following equation of kinematics, in this equation the value of y is equal to zero because it will be proposed that the ball lands at the same level that was fired.

y=(v_{y} )_{0}-\frac{1}{2}*g*t^{2}   \\where:\\g=9.81[m/s^2]\\t = time[s]\\y=0[m]

0=8.6*t-\frac{1}{2}*9.81*t^{2}  \\4.905*t^{2}=8.6*t\\ t=1.75[s]

In order to find the distance traveled horizontally from the cannonball, we must use the speed kinematics equation in the X coordinate.

x = (v_{x})_{0}  *t\\x=12.28*1.75\\x=21.5 [m]

In order to find the last value, we must bear in mind that when the cannonball reaches the maximum height, the velocity in the component y is equal to zero, and we can find the value of and with the following kinematic equation

y = (v_{y})_{0} *t+\frac{1}{2} *g*(t)^{2} \\y = 0*t+\frac{1}{2} *9.81*(1.75)^{2}\\ y=15 [m]

6 0
3 years ago
→15 points← Waiting for his new game to come in the mail, Billy races up the stairs in 3 seconds from the basement whenever he h
stich3 [128]

Answer:

500 Newton’s 3 meters high

Explanation:

3 0
2 years ago
Calculate the percentage increase in speed of the cyclist when the power output changes from 200 W to 300 W.
Rom4ik [11]

Answer:

<em>50%</em>

Explanation:

Given

Initial power = 200W

Final power = 300W

Increment = 300 - 200 = 100W

percentage increase = increment/initial power * 100

percentage increase = 100/200 * 100%

percentage increase = 0.5 * 100

percentage increase = 50%

<em>Hence the percentage increase in speed is 50%</em>

6 0
2 years ago
8th grade science question on forces, please help me im soooo close and i dont understand this one :)
marin [14]

Answer: The dog is pull the stick away from the boys hand

the boy is also pulling if the boy lets go of the stick the dog will fall due to law of action and reaction

The man is pushing the horse cart up the hill to do so he has to apply force

Explanation:

7 0
3 years ago
Read 2 more answers
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×10^6 N, one at an angle 14.0∘ west of north,
laila [671]

Answer:

1.45544 J

Explanation:

See attachment

5 0
2 years ago
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