Thursday, November 14, 2019
Exploring Motion And Force :: essays research papers
Exploring Motion and Forces Calculating Speed: Section 1 q     The SI unit for distance is meters. q     The SI unit for speed is meters per second. q     What is the SI unit for time is seconds. Calculating Speed: Section 2 q     When solving for speed, you are looking for meters per second (velocity). q     Your speed is 5 meters per second. 100/20 = 5 q     You skate faster. Calculating Speed: Section 3 q     When solving for speed, you are looking for meters per second (velocity). q     Her average speed was 9.37 meters per second. 200/21.34 = 9.37 Calculating Speed: Section 4 q     When solving for time, you are looking to end up with distance over velocity. q     If a lightning bolt strikes the ground 1 km away from you, it will take .30 seconds for the sound to reach you. 100/330 = .30 Calculating Speed: Section 5 q     If the 60th floor is 219 m above the first floor, it would take the elevator 21.9 seconds to go from the 1st floor to the 60th floor. 219/10 = 21.9 Calculating Speed: Section 6 q     It would take 5 hours to finish the race if the river was 130 km and you were traveling downstream. 10 km/hr is added to your speed of 16 km/hr because you are moving downstream. 130/26 = 5 q     If you were traveling upstream, it would take 21.6 hours. 10 km/hr is subtracted from your speed of 16 km/hr because you are moving upstream. 130/6 = 21.6 Velocity and Speed: Section 1 q     They have the same velocities. q     They have the same speeds. q     There is no difference between speed and velocity. Calculating Acceleration: Section 1 q     The car’s average acceleration is 3 m/s2. q     The average acceleration is positive because the car is gaining speed. Calculating Acceleration: Section 2 q     The roller coaster’s acceleration is 7.3 m/s2. Calculating Acceleration: Section 3 q     The swimmer’s acceleration is .01 m/s2 during this interval. Calculating Acceleration: Section 4 q     The acceleration of the roller coaster is –5 m/s2. q     The average acceleration is negative because the roller coaster loses speed. Putting the Knowledge to Work: Hypothesis Question q     You can measure a runner’s speed by calculating distance traveled over time. q     Running twice as far would take twice as much time if the runner is moving at a constant speed. Putting the Knowledge to Work: Data and Observations Putting the Knowledge to Work: Analysis Distance (meters)     0-5      5-10     10-15     15-20     20-25     25-30     30-35     35-40     40-45     45-50 Robbie’s Time (short)     .95     1.11     .60     .67     .32                         Velocity     5.26 m/s     4.50 m/s     8.33 m/s     7.26 m/s     15.63 m/s                         Acceleration     5.54 m/s2     -.68 m/s2     6.38 m/s2     -1.60 m/s2     26.16 m/s2                         Duran’s Time (short)     .42     1.58     .9     .63     .53                         Velocity     11.9 m/s     3.16 m/s     5.56 m/s     7.94 m/s     9.43 m/s                         Acceleration     28.33 m/s2     -5.53 m/s2     2.67 m/s2     3.45 m/s2     2.8 m/s2                         Robbie’s Time (long)     .69     1.7     .24     .27     1.23     .78     .53     .81     .50     .39 Velocity     7.25 m/s     2.94 m/s     20.83 m/s     16.52 m/s     4.07 m/s     .64 m/s     9.43 m/s     6.17 m/s     10 m/s     12.82 m/s Acceleration     10.5 m/s2     -2.54 m/s2     74.54 m/s2     -15.9 m/s2     -10.1 m/s2     -4.40 m/s2     16.58m/s2     -4.02 m/s2     7.66 m/s2     7.23 m/s2 Duran’s Time (long)     1.29     .8     .32     .4     1.22     .72     .41     .96     .46     .8 Velocity     3.86 m/s     6.
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