Recent content by tennisacerg

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    Calculating Speed and Force of a 10m Dive

    Can you please help me out with this problem?!? A 65 kg person dives into the water from the 10 m platform. a)What is her speed as she enters the water? b)She comes to a stop 2.0 m below the surface of the water. What net force did the water exert on the swimmer?
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    How Does Newton's 2nd Law Apply to Stopping Distance?

    Can you please help me out with this problem?!? Suppose that a 1000 kg car is traveling at 25 m/s (about 55 mph). It brakes can apply a force of 5000 N. What is the minimum distance required for the car to stop. :confused:
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    Finding the Tension in a String Using Newton's Laws

    the only thing that i can recommend is to draw a force diagram and label all the numbers on that and see if you can figure out some sort of equation from that
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    Does an Elevator Affect Your Weight?

    A student, standing on a scale in an elevator at rest, sees that his weight is 840 N. As the elevator rises, his weight increases to 1050 N, then returns to normal. When the elevator slows to a stop, his weight drops to 588 N. Determine the acceleration at the beginning and end of the trip...
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    How Is Lift Force Calculated for a Helicopter?

    A 4600 kg helicopter accelerates upward at 2.0 m/s^2. What lift force is exerted by the air on the propellors? I don't know how to do it. Please help :confused:
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