Question

An object free falls $15m$ from the top of a ladder. Select the graph that best describes the following quantities during the fall.
The momentum of the object

• A. A
• B. B
• C. C
• D. D
• E. E

Answer 1

Answer: (C)

C

The momentum of an object of mass mm and having velocity vv is given by ,

$p=mv$

or $p\propto v$

As the object falls down its velocity increases with time due to gravitational acceleration, hence the momentum increases (linearly), by the given relation, which is best shown in graph $C$.