In terms of competence, if the velocity of the stream triples, the impact force of the water will increase ________ times.
A)two
B)three
C)nine
D)eighteen

Question

Quizplus · Accepted Answer

According to the equation for calculating impact force - F= 1/2 x p x v^2 x A, where p is the density of water, v is the velocity of the water, and A is the cross-sectional area of the stream - the impact force is directly proportional to the square of the velocity. Therefore, if the velocity triples, the impact force will increase 9 (3 squared) times.

In Terms of Competence, If the Velocity of the Stream