# Module 9 - Physical Science: Question Preview (ID: 29710)

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**What is the speed of a jogger who jogs 600 meters in 45 minutes? Please answer in meters per second. (60 seconds = 1 minute)**

a) -.22 m/s

b) .22 m/s

c) 4.5 m/s

d) -4.5 m/s

**What is the speed of a boat that travels 150 miles in 2 hours? Please answer in miles per hour.**

a) 75 mph

b) 70 mph

c) .0133 mph

d) 30 mph

**Which is a vector quantity?**

a) . 1.2 meters/second2 east

b) 3.4 feet/hour slowing

c) 10 meters

d) 56 liters

**A train takes a long time to stop. That’s what makes trains so dangerous to people who cross the tracks when one is near. If a train is traveling at 30 meters per second south and takes 720 seconds to come to a stop, what is the train’s acceleration?**

a) 24 m/s^2

b) -0.042 m/s^2

c) -24 m/s^2

d) .042 m/s^2

**A long, vertical glass tube contains a feather and a penny. All the air is pumped out, and the tube is inverted, causing the penny and the feather to fall. Which hits the bottom first, the feather or the penny?**

a) The Feather

b) The Penny

c) They hit the bottom at the same time

d)

**What is the height of a building (in meters) if it takes a dropped rock 4.1 seconds to fall from its roof?**

a) 82.37 meters

b) 20.25 meters

c) 40.18 meters

d) 164.74 meters

**A hot-air balloonist drops a rock from his balloon. It takes 7 seconds for the rock to fall to the ground. What is the balloonist’s altitude in feet?**

a) 112 feet

b) 784 feet

c) 34.3 feet

d) 2.29 feet

**If an object travels for 3 hours with a constant velocity of 12 miles per hour west, what is the acceleration?**

a) .25 m/s^2

b) 4 m/s^2

c) 0 m/s^2

d)

**A sports car goes from a velocity of zero to a velocity of 12 meters per second east in 2 seconds. What is the car’s acceleration?**

a) .17 m/s^2

b) -6 m/s^2

c) 6 m/s^2

d) .17 m/s^2

**A car and a truck are traveling north on a highway. The truck has a speed of 45 miles per hour and the car has a speed of 57 miles per hour. If the truck is ahead of the car, what is the relative velocity?**

a) -12 m/s North

b) 12 m/s North

c) 102 m/s North

d) -102 m/s North

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