1. A ball rolls off a track at a height 2.02 meters above the ground, its...
1. A ball rolls off a track at a height 2.02 meters above the ground, its exit velocity is 1.28 m/s at an angle 19.3 degrees below horizontal, how long is its flight time in seconds?
Homework Answers
The initial vertical velocity of the ball in downward direction is
acceleration in downward direction is
Distance travelled in downward direction is given by
Solving above quadratic equation we get
and
We are solving for a positive value of time.
So the flight time is t = 0.6 s.
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