Which of the following makes it difficult for a runner to change either his speed or direction?

Question

Quizplus · Accepted Answer

Inertia is a property of matter that makes it difficult to change its state of motion, including both speed and direction. This means that a runner will find it difficult to change their speed or direction due to their inertia. Torque refers to the twisting force that causes rotational motion, acceleration refers to the rate of change of velocity, and velocity refers to speed in a given direction, but none of these factors specifically relate to the difficulty of changing a runner's speed or direction.

Which of the Following Makes It Difficult for a Runner