You skydive from a plane and wait quite awhile before pulling the ripcord. Inclu

Question

You skydive from a plane and wait quite awhile before pulling the ripcord. Including air resistance, which graph most closely depicts your acceleration? A B D F H You skydive from a plane and wait quite awhile before pulling the ripcord. Including air resistance, which graph most closely depicts your speed? B C F G H You throw an object straight up into the air. It rises a few feet and then comes straight back down. Ignoring the effect of your hand in both throwing and catching, which graph most closely depicts the speed of your object? A C D E G

Explanation / Answer

When the skydiver steps out from the plane, as his weight is the only downward force acting on him, and hence he start to accelerate. As speed increases, the air resistance increases and hence the net force decreases. As net force decreases, the accceleration of diver decreases inaccordance with Newton's second law F = ma

If once attain terminal velocity, his accelration is zero.

The graph ( b ) represent the accelation-time graph of the skydiver

The graph ( c ) represent the velocity-time graph of the skydiver

The graph ( g ) represent the velocity-time of object thrown in the air

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