Module 2 Quizzes Flashcards
If you walk 9 miles due north, then turn around and walk 5 miles due south, how much total distance have you traveled and what is your net displacement from your starting point respectively?
A. 4 miles, 4 miles B. 14 miles, 4 miles C. 14 miles, 14 miles D. 4 miles, 14 miles
B
What A a car’s average speed if it travels 320 km in 3.6 h?
A. 89 km/h B. 88 km/h C. 88.889 km/h D. 87 km/h
A
Four runners completed a relay race where they each ran 800 m (for a total of 3200 m). If their times were 1 minute 55 seconds, 2 minutes 2 seconds, 1 minute 58 seconds, and 1 minute 52 seconds, what was the average speed for the entire race?
A. 2.37 m/s B. 4.80 m/s C. 6.85 m/s D. 7.81 m/s
C
You get into your spaceship, blast off from Earth, and travel straight across the Solar System to Saturn for a displacement of 1.27 x 10^9 km. Assuming your spaceship averaged 1.20 x 10^4 m/s for the trip to Saturn, how long did this trip take?
A. 1.76 years B. 3.35 years C. 17.2 years D. 20.1 years
B
Driving along interstate 75 through The Everglades (Alligator Alley.) at 108 km/hr, you look out the window and spot an alligator resting in the sun before returning your attention to the road. If you were looking out the window for 2.1 seconds, how much distance did you cover while looking at the alligator?
A. 18 m B. 51 m C 63 m D. 230 m
C
A teenager on a motor bike travels for 3.5 h at 50 km/h and 2.5 h at 70 km/h. What is her average speed for the trip?
A. 20 km/h B. 54 km/h C. 58 km/h D. 60 km/h
C
A self-driving car and one driven by a person are both initially traveling at 60 mi/h along a straight road. Suddenly, a cow wanders onto the road ahead. The person sees the cow and steps on the brakes after 0.25 seconds, while the robotic system in the self-driving care “sees” the cow and starts braking after 0.50 seconds. How much further has the self-driving car traveled before it starts braking? (5280 ft = 1 mi).
A. 15 ft B. 20 ft C 22 ft D. 310
C
Serena and Venus Williams start 150 m apart and begin running towards each other. Serena has a speed of 7.5 m/s and Venus has a speed of 5.0 m/s. How long does it take for them to meet?
A. 9s B. 10 s C. 11 s D. 12 s
D
If a rocket accelerates at a uniform 16 m/s^2, how long will it take to reach a speed of 1800 km/hr if it starts from rest?
A. 11 s
B. 18 s
C. 31 s
D. 110 s
C
A potato is thrown straight upwards with a speed of 10 m/s. How long does it take to reach a height 2.2 m above where it started while descending (on the way down)?
Neglect air resistance and assume the acceleration due to gravity is g = -9.8 m/s^2.
A. 0.22 s
B. 0.25 s
C. 1.5 s
D. 1.8 s
D
