Physics 1 Questions & Answers

Physics 1 Questions & Answers 4 scalar qualities - ANSWER: temperature time mass volume 4 vector qualities - ANSWER: force position velocity acceleration A ball falls from rest for 5 seconds. Neglecting air resistance, during which of the 5 seconds does the ball's speed increasing most? a. a first second b. the last second c. there is not enough information to determine the answer d. the speed change is the same during each of the second 5 seconds - ANSWER: the speed change is the same during each of the 5 seconds A child is tiding a bike and skids to a stop. What happens to their kinetic energy? a. it is turned into potential energy b. it is conserved c. it is turned into heat by sliding friction d. it is dissipated by static friction - ANSWER: c. it is turned into heat by sliding friction A child throws a ball perfectly horizontally at the same time a dirt clod falls off it as the same height above the ground. The clod falls vertically downward. Ignoring air resistance, the time when the clod hits the ground will equal to the time the ball hits the ground b. be earlier than when the ball hits c. be later than when the ball hits d. not depend upon how high it started falling from - ANSWER: a. be equal to the time the ball hits the ground