A ping pong ball rolls off a 5.Om high table and lands on the floor, 3.0m away from the table. How long is the ball in the air?

The ball was 1.01 seconds in the air

Explanation:

Horizontal Motion

When an object is thrown horizontally with a speed v from a height h, the range or maximum horizontal distance traveled by the object can be calculated as follows:

If we know the value of d and h, we can solve the equation for v:

Since the horizontal speed is constant, we can calculate the time the ball was in the air by using the equation:

The ping pong ball rolls from a height of h=5 m and lands on the floor a distance of d= 3 m away from the table. Calculate the speed:

Calculating:

Now calculate the time:

The ball was 1.01 seconds in the air

Note: The time does not depend on the distance d at all. If we borrow the equation from free-fall motion, the time can be calculated with:

true tan speed = ang vel x radius

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