Two balls are thrown from the edge of a rooftop with the same speed, but one is thrown upward while the other is thrown horizontally. Which of the following statements accurately describes the speed and velocity of the balls when they hit the ground, assuming air resistance can be ignored? a)The final speeds of the balls will be equal but their final velocities will differ b)The final velocities of the balls will be equal but their final speeds will differ. c)Both the final speeds and final velocities of the balls will be equal. d) Neither the final speeds nor the final velocities of the balls will be equal.

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.