Physics 1 st midterm Please don\'t bring these questions to the college. These q

Question

Physics 1 st midterm Please don't bring these questions to the college. These questions are made by 216 prep year students and they are not responsible about anything happens later. 1- The "action-reaction" pair of forces do not cancel each other because: a. The action force is greater than the reaction force. b. They act on different bodies. c. They act in the same direction. d. The reaction forces is greater than action force Answer: B 2 Which of the following quantities relating to motion is not a vector? a. Displacement. b. Speed. c. Velocity d. Acceleration Answer: B 3- A quantity that is a measure of how the distance traveled changes with time is: a. Displacement. b. Velocity c. Speed. d. Acceleration. Answer: C 4- A truck travels 60 km on a straight road at 20 km/h. it then continues in the same direction for another 80 km at 40 km/h. the AVERAGE SPEED if the truck ( in km/h) during this 140 km trip? a. 50 b. 30 c. 28 d. 32 Answer: C 5- A sprinter continues to run at 6 m/s until the end of a race. After crossing the finish line she decelerates at 2 m/s2 the time (in seconds) in which she stops is: a. 0.6 b. 3 c. 12 d. 0.3 Answer: B 6- The velocity of a car changes from 90 km/h due west to come to rest in 15s. the

Explanation / Answer

1] Option B is correct

Two equal and opposite forces acting on the same object do not make an action-reaction pair. If a football is kicked from both sides at the same time, it doesn't go anywhere, because the two feet kicking it exert equal and opposite forces on the same ball and cancel each other out.

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