Lab: Motion Answers

In this experiment, the [___] was intentionally manipulated. This was the independent variable.

speed of the carheight of the trackdistance traveled

[___]

Based on the time measurements in the table, what can be said about the speed of the car on the lower track as compared to the higher track? [___]

Use the graph of distance versus time to complete the sentences. The cars on the higher track travel the cars on the lower track, in the same time. This means that the cars on the higher track have a average speed than those on the lower track. This is demonstrated by the of the higher track line being greater than the slope of the lower track line.

Use the table to answer the questions. What is the fastest time trial for the first quarter checkpoint? seconds What is the slowest time trial for the first quarter checkpoint? seconds What is the range of times measured for this checkpoint? seconds

Match the measurement with the proper SI unit. Acceleration: Velocity: Distance:

Read the elapsed time on the stopwatch and answer the questions. In which digit is there the least amount of confidence? How many significant figures does this measurement have?

Use the graph of speed versus time to answer the questions about acceleration. Which of the cars is speeding up? Which of the cars is slowing down? Which of the cars is maintaining a constant speed?

You are leaving for a party at your cousin’s house in a city that is 150 km away. You will travel at an average rate of 50 km/hr. How long will it take you to arrive? ⇒ 3 hours If you need to be at the party in 2.5 hours, how fast would you need to drive to get there? km/hr

How can the reasoning for the above answer be best explained? On the higher track, the elapsed time is [___].

The dependent variable measured was the .

This means that the cars on the higher track have a average speed than those on the lower track.

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