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

1.6 seconds
1.6 seconds

40 seconds

Answer 1

To determine how long it takes Rock 2 to fall, we can use the data provided.

From the information given:

• Both rocks fall from the same height of 78.4 meters.
• Rock 1 has a time to fall of 4.0 seconds.

In free fall (assuming no air resistance), the time taken to fall a given height does not depend on the mass of the object, as all objects fall at the same rate in a vacuum.

Therefore, Rock 2 will also take the same amount of time as Rock 1 to fall from the same height.

So, it will take Rock 2 4.0 seconds to fall.

The correct response is:

4.0 seconds.