Review Questions For Chap 2 1
Remedial Physics------------------------------------Review Questions -------------------------------------Chapter 2
Quantitative Problems
1) An object moves 15.0 m north and then 11.0 m south. Find both the distance traveled and the magnitude of the displacement vector.
A) 6.0 m, 26.0 m B) 26.0 m, 4.0 m C) 26.0 m, 26.0 m D) 4.0 m, 4.0 m
2) A boat can move at 30 km/h in still water. How long will it take to move 12 km upstream in a river flowing 6.0 km/h?
A) 20 min B) 22 min C) 24 min D) 30 min
3) 55 mi/h is how many m/s? (1 mi = 1609 m.)
A) 25 m/s B) 49 m/s C) 90 m/s D) 120 m/s
4) What must be your average speed in order to travel 350 km in 5.15 h?
A) 66.0 km/h B) 67.0 km/h C) 68.0 km/h D) 69.0 km/h
5) A runner ran the marathon (approximately 42.0 km) in 2 hours and 57 min. What is the average speed of the runner in m/s?
A) 14.2 × 103 m/s B) 124 m/s C) 3.95 m/s D) 14.2 m/s
6) A car travels 90 km/h. How long does it take for it to travel 400 km?
A) 4.1 h B) 4.2 h C) 4.3 h D) 4.4 h
7) If you are driving 72 km/h along a straight road and you look to the side for 4.0 s, how far do you travel during this inattentive period?
A) 18 m B) 20 m C) 40 m D) 80 m
8) If you run a complete loop around an outdoor track (400 m), in 100 s, your average velocity is
A) 0.25 m/s. B) 4.0 m/s. C) 40,000 m/s. D) zero.
9) A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average speed?
Quantitative Problems
1) An object moves 15.0 m north and then 11.0 m south. Find both the distance traveled and the magnitude of the displacement vector.
A) 6.0 m, 26.0 m B) 26.0 m, 4.0 m C) 26.0 m, 26.0 m D) 4.0 m, 4.0 m
2) A boat can move at 30 km/h in still water. How long will it take to move 12 km upstream in a river flowing 6.0 km/h?
A) 20 min B) 22 min C) 24 min D) 30 min
3) 55 mi/h is how many m/s? (1 mi = 1609 m.)
A) 25 m/s B) 49 m/s C) 90 m/s D) 120 m/s
4) What must be your average speed in order to travel 350 km in 5.15 h?
A) 66.0 km/h B) 67.0 km/h C) 68.0 km/h D) 69.0 km/h
5) A runner ran the marathon (approximately 42.0 km) in 2 hours and 57 min. What is the average speed of the runner in m/s?
A) 14.2 × 103 m/s B) 124 m/s C) 3.95 m/s D) 14.2 m/s
6) A car travels 90 km/h. How long does it take for it to travel 400 km?
A) 4.1 h B) 4.2 h C) 4.3 h D) 4.4 h
7) If you are driving 72 km/h along a straight road and you look to the side for 4.0 s, how far do you travel during this inattentive period?
A) 18 m B) 20 m C) 40 m D) 80 m
8) If you run a complete loop around an outdoor track (400 m), in 100 s, your average velocity is
A) 0.25 m/s. B) 4.0 m/s. C) 40,000 m/s. D) zero.
9) A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, then 1.0 km west to return to its starting point. This trip takes 45 min. What was the bear's average speed?