Answer:
Distance = 85.3 miles
displacement = 0
Explanation:
The total distance covered to grandma's house is 42.6 miles as recorded by the odometer. The same distance would be covered when returning to the base. Hence;
Total distance for the round trip = 42.6 + 42.6 = 85.2 miles
Since the trip was a round trip, the displacement is zero because the family returned to their initial location.
If the kinetic energy of the train decreases from 314 J to 250 J, the gravitational potential energy of the system It increases from 2 J to 66 J.
<h3>What is conservation of mechanical energy?</h3>
The principle of conservation of mechanical energy states that the total mechanical energy of a system is always constant. This means that the sum of the potential and the kinetic energy does not change.
Thus, if the kinetic energy of the train decreases from 314 J to 250 J, the gravitational potential energy of the system It increases from 2 J to 66 J.
Learn more about mechanical energy:brainly.com/question/13552918
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Although the way the curve
upon the introduction of chemicals slopes downward it suggests a release,
similarly the upward slope of the second picture upon the introduction of
chemicals suggests a build up or absorption of said energy.
<span>Since the products have
more energy, this reaction is endothermic, meaning heat needs to be added. </span><span>
<span>478-432=46kJ of energy absorbed.</span></span>
- Two 3.0g bullets are fired with speeds of 40.0 m/s and 80.0 m/s, respectively.
- Mass of the 1st bullet (m1) = 3 g = 0.003 Kg
- Mass of the 2nd bullet (m2) = 3 g = 0.003 Kg
- Velocity of the 1st bullet (v1) = 40 m/s
- Velocity of the 2nd bullet (v2) = 80 m/s
- We know, kinetic energy of a body
- Kinetic energy of the 1st bullet
- Kinetic energy of the 2nd bullet
- So, the 2nd bullet which has greater velocity has more kinetic energy.
- Therefore, the ratio of their kinetic energies
<u>Answer:</u>
The kinetic energies of the bullets are 2.4 J and 9.6 J.
The bullet having greater velocity has more kinetic energy.
The ratio of their kinetic energies is 1 : 4.
Hope you could get an idea from here
Doubt clarification - use comment section.
Answer:
15000000 m
Explanation:
From the question,
Speed (S) = Distance(d)/Time(t)
S = d/t....................... Equation 1
Make d the subject of the equation
d = St..................... Equation 2
Given: S = 50 km/s = 50000 m/s, t = 5 minutes = 5*60 seconds = 300 seconds
Substitute these values into equation 2
d = 50000(300)
d = 15000000 m
Hence the skier travels 15000000 m