Mechanical energy of the projectile-earth system
A 9.20 kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 75.0 kJ during the projectile's ascent. How much higher would the projectile have gone were air drag negligible?
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A jetliner is moving at a speed of 274 m/s. The vertical component of the plane's velocity is 50.0 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
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You shoot an arrow into the air.Two seconds later (2.00a) the arrow has gone straight upward to a height of 31.0 m above its launch point.What was the arrow's initial speed?
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Such a star could be thought of as a giant atomic nucleus. If a star with a mass equal to that of the sun (of mass 1.99 × 10^30 kg) were to collapse into neutrons, what would be the radius of the star?
A 61 driver gets into an empty taptap to start the day's work. The springs compress 1.8×10-2 . What is the effective spring constant of the spring system in the taptap?
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