Read the passage below and answer the question <br><br> In considering the effect of force on motion, linear momentum is very important. This can be understood from the following examples: <br><br> 1. We know that a much greater force is required to push a truck than a car to bring them to the same speed in the same time. Similarly a greater opposing force is needed to stop a heavy body than a light body in the same time, when they are moving with the same speed. Thus the mass of a body is an important parameter that determines the effect of force in its motion. <br> 2. Speed is another parameter to consider. A bullet fired from a gun can easily pierce through a target like human tissue, before it stops, resulting in grave injury. The same bullet thrown at a moderate speed can be easily stopped. Thus for a given mass, greater is the speed, greater is the opposing force needed to stop the body in a certain time. <br><br> QUESTION : When we consider the effect of force on its motion

Question

$\begin{array}{1 1} (a)\; \text{velocity is a very important quantity } \\ (b)\; \text{mass is a very important quantity } \\ (c)\; \text{both mass and the velocity of the object is a very important quantity} \\ (d)\; \text{none of the two are important} \end{array}$