Answer:
Pressure on the molten rock lessens and the gases dissolved in rock can bubble and expand rapidly causing violent eruptions.
Explanation:
that's just how it works lol. hope this helps :]
Answer:
A deciduous forest is a good example of biodiversity, it has large varieties of plants and animals. These plants and animals adapt to their environment to survive. The Deciduous forest has a lot of sustainability
Explanation:
Easy my dude.
Impulse (J) is equal to the change in momentum of the ball. It is also equal to Force times Time:
J = Ft
J = (550 N)(0.03 s)
J = 16.5 Ns
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A. The average force exerted on the ball during the serve is 57 N
B. The resistive force, given the data is -1125 N
<h3>A. How to determine the average force</h3>
- Mass (m) = 57 g = 57 / 1000 = 0.057 Kg
- Initial velocity (u) = 50 m/s
- Time (t) = 0.05 s
- Acceleration (a) = u / t = 50 / 0.05 = 1000 m/s²
- Force (F) = ?
F = ma
F = 0.057 × 1000
F = 57 N
<h3>B. How to determine the resistive force</h3>
- Mass (m) = 3000 Kg
- Initial velocity (u) = 72 Km/h = 72 / 3.6 = 20 m/s
- Final velocity (v) = 18 Km/h = 18 / 3.6 = 5 m/s
- Time (t) = 40 s
- Force (F) = ?
F = m(v – u) / t
F = 3000(5 – 20) / 40
F = -1125 N
Learn more about momentum:
brainly.com/question/250648
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