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A hotel elevator ascends170m with a maximum speed of5.4m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2.
(a) How far does the elevator move while accelerating to full speed from rest?
m
(b) How long does it take to make the complete trip from bottom to top?
s
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At the instant of engine burnout, the rocket has risen to 52 m and acquired a velocity of 40 m/s. The rocket continues to rise in unpowered flight, reaches most height and falls back to the ground.
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venturi tube is a device made to measure pressure differences as the fluid (air density = 1.2kg/m^3) flows through a constriction. calculate difference in the level of mercury
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An enemy ship is on the east side of a mountainous island. The enemy ship can maneuver to within 2500 meters of the 1800 meter high mountain peak and can shoot projectiles with an initial speed of 250m/sec. If western shoreline is horizontally 30..
A baseball weighing 150 g is moving in the negative x-direction toward a batter with an initial speed 40 m/s. Calculate the impulse experienced by the baseball
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