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BigorU [14]
3 years ago
14

Consider a high-speed bus colliding head-on with an innocent bug. The force of impact splatters the unfortunate bug over the win

dshield. According to Newton's 3rd Law, which is greater, the force on the bug or the force on the bus?
Physics
1 answer:
Alex17521 [72]3 years ago
3 0

Answer:

The force on the bug and the force on the bus are the same.

Explanation:

Newton's Third Law of Motion states that, "For every action, there is an equal and opposite reaction" or it can be restated that If a high-speed bus exerts a force on an innocent bug, then the innocent bug must exert a force of equal magnitude and opposite direction back on the high-speed bus.

Note: though the forces are equal but the effect are not, in this case the innocent bug was splattered but the bus was not destroyed.

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A 70 ft rope hangs from a helicopter above this room. The rope has a mass per unit length of 2 lb/ft. In order to be rescued fro
Mrac [35]

Answer:

The work done to get you safely away from the test is  2.47 X 10⁴ J.

Explanation:

Given;

length of the rope, L = 70 ft

mass per unit length of the rope, μ = 2 lb/ft

your mass, W = 120 lbs

mass of the 70 ft rope  = 2 lb/ft x 70 ft

                                         = 140 lbs.

Total mass to be pulled to the helicopter, M = 120 lbs  + 140 lbs  

                                                                       = 260 lbs

The work done is calculated from work-energy theorem as follows;

W = Mgh

where;

g is acceleration due gravity = 32.17 ft/s²

h is height the total mass is raised = length of the rope = 70 ft

W = 260 Lb x 32.17 ft/s²  x 70 ft

W = 585494 lb.ft²/s²

1 lb.ft²/s² = 0.0421 J

W = 585494 lb.ft²/s²  = 2.47 X 10⁴ J.

Therefore, the work done to get you safely away from the test is  2.47 X 10⁴ J.

4 0
2 years ago
What role does Nitrogen play for all living organisms?​
Y_Kistochka [10]

It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.

Hope this helps! ;)

5 0
3 years ago
A weightlifter does 450 J of work on a barbell in 3 s. How much power is the weightlifter generating?
astra-53 [7]
450 J / 3 s = 150 J/s = 150 watts.
8 0
3 years ago
3. If you put flowers in water through what process does the water enter the steams ?
worty [1.4K]

Water travels through long, thin tubes running up from the roots through the stems and leaves called xylem.Water moves up the xylem through a process called capillary action.

Capillary action allows water to be pulled through the thin tubes because the molecules of the water are attracted to the molecules that make up the tube. The water molecules at the top are pulled up the tube and the water molecules below them are pulled along because of their attraction to the water molecules above them.

5 0
3 years ago
What type of force are you exerting when you stomp your foot on the ground
madam [21]

Answer:

stomp???, frictional force

Explanation:

this allow ur foot to be stomp

3 0
2 years ago
Read 2 more answers
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