Use the table of data for two falling rocks to answer the question.

Question

Rock 1 Rock 2
Mass (kg) 2.5 25
Height of Fall (m) 78.4 78.4
Time to Fall (s) 4.0 ?
Based on this data, how many seconds will it take rock 2 to fall?

(1 point)
Responses

0.4 second
0.4 second

4.0 seconds
4.0 seconds

40 seconds
40 seconds

1.6 seconds

Answer 1

To determine the time it takes for Rock 2 to fall, we can use the principle that, assuming they are both falling under the influence of gravity and air resistance is negligible, the time it takes for an object to fall from a certain height is independent of its mass.

From the data provided:

• Rock 1 takes 4.0 seconds to fall from a height of 78.4 meters.

Since both rocks are falling from the same height under the same conditions, Rock 2 will also take the same amount of time to fall.

Therefore, Rock 2 will also take 4.0 seconds to fall.

The correct response is 4.0 seconds.