Which way is it being pulled?
Sea floor spreading is caused by the continual injection of magma from the sea bed in between ridges found in mid-ocean. Injection of magma causes formation of new sea floor.
Forces cause the sea floor on each side of the mid-ocean ridge to move in opposite directions, each side belonging to a different lithospheric plate.
This process is continuous and results in an ever widening (spreading) sea floor at the expense of area lost elsewhere on the planet. Seafloor spreading ends when mid ocean ridges are subducted.
Momentum = mass x velocity
Mementum = 60 × 8
= 48 kg-m/s
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The kinetic energy when it returns to its original height is 100 J
The ball is thrown up with a Kinetic Energy K. E. = 0.5×m×v² = 100 J
Therefore the final height is given by
u² = v² -2·g·s
Where:
u = final velocity = 0
v = initial velocity
s = final height
Therefore v² = 2·g·s = 19.62·s
P.E = Potential Energy = m·g·s
Since v² = 2·g·s
Substituting the value of v² in the kinetic energy formula, we obtain
K. E. = 0.5×m×2·g·s = m·g·s = P.E. = 100 J
When the ball returns to the original height, we have
v² = u² + 2·g·s
Since u = 0 = initial velocity in this case we have
v² = 2·g·s and the Kinetic energy = 0.5·m·v²
Since m and s are the same then 0.5·m·v² = 100 J.
Learn more about kinetic energy at:
brainly.com/question/25959744
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<span>On earth, 3 kg of mass weighs 29.4 newtons (6.61 pounds).</span>
