Question

Rock A is thrown horizontally off of a cliff with a velocity of 20 m/s. The rock lands 60 m from the base of the cliff. According to the above information and diagram, how long will Rock A be in the air?

Answer 1

Rock A will be in the air for 3 seconds.

Step-by-step explanation:

To find the time it takes for Rock A to be in the air, we can use the horizontal displacement and the initial horizontal velocity. Since the rock is thrown horizontally, the initial vertical velocity is 0 m/s.

The horizontal displacement of 60 m can be used as the initial horizontal velocity is constant throughout the motion. We can use the equation:

Distance = Speed x Time

to find the time it takes for Rock A to be in the air. Rearranging the equation, we have:

Time = Distance / Speed

Substituting the values, we get:

Time = 60 m / 20 m/s

Time = 3 seconds