Honors Physics Exam 1

Multiple Choice Worksheet

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Date Shared: 9 March 2018

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Directions: Read each question carefully. Select the letter for the best answer to each question and completely fill in the corresponding circle on the answer sheet.  

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Which of the following questions contains a measurable independent and dependent variable? A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is: A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the dependent variable is: If a student was testing how the angle of a ramp affected the acceleration of a ball rolled down it, which of the following would most likely be their controlled variable? In science, which term best represents the strongest explanation scientist have for WHY something happens? Three different people weigh an object with a mass of 2.00 g on the same balance. Each person obtains a reading of exactly 7.32 g for the mass of the object. These results imply that the balance that was used is: Four students each measured the mass of one 1.55 g sample four times. Which student's data reflects the MOST accuracy and precision? A student is conducting an experiment in the lab and they determine that a toy car should travel for 171.9 s before crashing. When they do the experiment, the car crashes at 154.8 s. What is the percent error for this experiment? How many seconds are there in 2 days? To the correct number of significant figures, how far in miles does someone run if they run a 5K (5 km)? A car is traveling through Maine at 60 mi/hr. The car passes into Canada and the driver sees a speed limit sign but it is in km/hr. To the correct number of significant figures, how fast is the car traveling in km/hr? A person travels 10 m [N] and stops to talk to a friend. They walk another 7 m [N] with their friend to class. The person drops their friend off and then travels to their class 25 m [S]. What is the DISTANCE of the persons trip? A person travels 10 m [N] and stops to talk to a friend. They walk another 7 m [N] with their friend to class. The person drops their friend off and then travels to their class 25 m [S]. What is the DISPLACEMENT of the person? What does the speedometer in a car measure? Which of the following is/are true statements when discussing velocity? What does the odometer (mileage meter) in a car measure? A car starts from rest and accelerates uniformly to a final velocity of 35 m/s [S] in 12 seconds. What is the average acceleration? A car traveling at 100 km/h [forward] applies the brakes producing an average acceleration of 8.1 m/s^2 [backwards] for 3.0 seconds. What is the car’s final velocity? An object at rest free-falls from a height of 15 m. What will the object’s final velocity be? The slope of a position (or displacement) vs time graph is equal to the _________ of an object. The slope of a velocity vs time graph is equal to the ___________ of an object. Which of the following would be considered uniform one dimensional motion? Which of the following measurements is a vector measurement? True or False, an object's speed can be larger than its velocity. An object that is slowing down is to said to have: A bicyclist travels 60 miles from 2 pm to 6 pm. What is the bicyclist average speed? True or false, if a tennis ball and a bowling ball are dropped, the bowling ball will accelerate to the ground faster than the tennis ball. A sheet of paper and a book are both dropped from a desk. Why does the paper appear to accelerate much less than the book? Under what conditions would we consider an object to be speeding up? Which of the following statements is true?

How does the amount of salt in water affect the temperature at which it boils? How long ago did dinosaurs live on the Earth? How was the first microscope created? Why is there litter on school property? The temperature the eggs The gender of the alligator baby The incubator The alligator parents The number of surviving plants in the water The water The amount of salt in the water The temperature of the water Mass of the ball Acceleration of the ball Angle of Ramp All of the above Theory Law Hypothesis Observation Precise Accurate and Precise Accurate None of the above 1.53 g, 1.55 g, 1.50 g, 1.54 g 0.89 g, 1.26 g, 1.55 g, 1.64 g 1.44 g, 1.43 g, 1.42 g, 1.44 g 1.63 g, 1.55 g, 1.50 g, 1.41 g 9.9% -9.9% 0.099% 11.04% 172,800 s 86,400 s 1,728 s 17,280 s 3 mi 3.1 mi 8 mi 1.25 mi 99 100 98.17 240.5 42 m 42 m [N] 8 m 8 m [S] 8 m [S] 8 m 42 m [N] 42 m Instantaneous Speed Average Speed Velocity Distance All of the Above Velocity is the rate of change in position/displacement with respect to time. Velocity is a vector measurement. Velocity is calculated by dividing the change in position (or displacement) by a time interval. Distance Displacement Speed Acceleration 2.9 m/s^2 [S] 2.9 m/s^2 [N] 0.34 m/s^2 [S] 3.3 m/s^2 [S] 3.5 m/s [forward] 0 m/s, car has stopped 2.8 m/s [forward] 7.2 m/s [forward] 17 m/s [down] 14 m/s [down] 11 m/s [down] 21 m/s [down] Velocity Speed Magnitude Acceleration Acceleration Speed Displacment Velocity A train traveling across a bridge. A kid swinging on a playground. A car driving down the street and then taking a left to get on the highway. A boomerang that is thrown and then comes back to the person. Displacement Distance Temperature Time True False negative acceleration positive acceleration deceleration friction 15 mph 30 mph 60 mph 10 mph False True Air resistance The book weighs more The book experiences a stronger pull due to gravity All of the above [forward or positive] velocity, [forward or positive] acceleration [forward or positive] velocity, [backward or negative] acceleration [backward or negative] velocity, [forward or positive] acceleration Not enough information Displacement can never be greater than distance Displacement is always equal to distance. Displacement can never equal distance. Displacement can never be less than distance.

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9 March 2018

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