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Natalka [10]
3 years ago
11

Describe the conditions that are necessary for mechanical energy to be a conserved quantity.

Physics
1 answer:
rusak2 [61]3 years ago
5 0
Mechanical energy is conserved when there are no non-conservative forces acting on the body. Examples are friction and elastic forces of stress in a body. These non-conservative forces convert mechanical energy to other forms of energy like heat and sound

Hope this makes sense
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What is the momentum of a vehicle that has a mass of 800 kg and is moving at a velocity of 5 m/s
yarga [219]

Answer:

4000 kg.m/s

Explanation:

p=mv

m=800 kg

v=5 m/s

p=(800)(5)= 4000 kg.m/s

3 0
3 years ago
two forces x and y are acting at 120 degrees to each other, if the magnitude are 8N and 10N respectively determine their resulta
Ber [7]

The resultant force of both forces is 15.62 N.

<h3 /><h3>What is resultant?</h3>

The Resultant of forces is a single force obtained when two or more forces are combined.

To calculate the resultant of the force, we use the formula below.

Formula:

  • R = √[a²+b²-2abcos∅]..................... Equation 1

Where:

  • R = Resultant of the forces.
  • ∅ = Angle between both forces

From the question,

Given:

  • a = 8 N
  • b = 10 N

Substitute these values into equation 1

  • R = √[8²+10²-2×8×10cos120°]
  • R = √[64+100-160cos120°]
  • R =√ [164-160(-0.5)]
  • R = √[164+80]
  • R = √(244)
  • R = 15.62 N

Hence, the resultant force of both forces is 15.62 N.

Learn more about resultant force here: brainly.com/question/25239010

#SPJ1

8 0
2 years ago
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Which of the following best describes Biology
valkas [14]
A. Is the correct answer.
3 0
3 years ago
Read 2 more answers
Can somone pls help me??!! i’m very stuck
LenKa [72]

Answer:

R

Explanation:

Her distance from home and Time increase

the stops when she gets to the library

then her distance from home decreases while her time increases

7 0
3 years ago
An airplane flies from Houston to New York City, which is a distance of 2280 kilometers. The trip takes 3.5 hours. What was the
garik1379 [7]

Answer:

a)603 km/hr

Explanation:

7 0
3 years ago
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