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# Physics 1401

## Online Quiz 2

### Chapter 3 in Conceptual Physics 12th edition

Question 1. If average speed = distance/time, then for a 5-hour trip where you travelled 250 miles, your average speed was
(a) 0 mph,    (b) 25 mph,    (c) 50 mph,    (d) 5 mph,    (e) 120 mph.

Question 2. For the trip mentioned above, would the speedometer have to read a constant speed for the entire trip?
(a) yes     (b) no

Question 3. For the trip mentioned above, could the speedometer have read a constant speed for the entire trip?
(a) yes     (b) no

Question 4. If the average acceleration = change in velocity/time, then for a car that starts from rest and attains a velocity of 25 km/hour in 5 seconds, the average acceleration (in km/hour/second) is
(a) 0     (b) 5     (c) 10     (d) 25     (e) 50

Question 5. The average acceleration of a car that maintains a constant velocity of 100 km/hour for 10 seconds (in km/hour/sec) is
(a) 0     (b) 5     (c) 10     (d) 25     (e) 50

Question 6. During the first two seconds, a freely falling object released from rest near the surface of the earth will fall a distance (in m) of
(a) 0     (b) 5     (c) 10     (d) 20     (e) 50

Question 7. By the end of the first two seconds, a freely falling object released from rest will attain a speed (in m/s) of
(a) 0     (b) 5     (c) 10     (d) 20     (e) 50

Question 8. A ball is thrown straight up with an initial speed of 20 m/s. Neglecting air resistance, the ball will rise to a height above its release point (in m) of
(a) 5     (b) 10     (c) 20     (d) 40     (e) 45

Question 9. Neglecting air resistance, the ball in the previous question will return to its release point with a speed (in m/s) of
(a) 5     (b) 10     (c) 20     (d) 40     (e) 45

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