A marble rolls down a hill for 22 seconds and travels 4.5 meters. What was its average speed?

Question

11-09-2022
Physics

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A marble rolls down a hill for 22 seconds and travels 4.5 meters. What was its average speed?

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ar2036 ar2036 · Answer 1 · 2022-09-11T16:27:54+02:00

Answer: An example that might help u understand a bit-

A ball having a horizontal velocity of 2.0 ms-1 rolls off the top of a table that is 1.5 meters tall. Determine the distance the ball will travel from the table to the ground before it lands.

Solution:

The ball will continue to advance at a speed of 2.0 m/s after it rolls off the edge of the table until it lands on the ground. We simply need to learn how long it will be in the air until it touches down.

To do that, we'll modify the freefall formula to provide the time. Realizing that the ball is behaving exactly like a dropped ball in the vertical dimension is critical in this situation.

Explanation: