Texting While Driving Corrections
Prediction: We predict the car will travel 0.02815 in 2.38 seconds at a constant velocity of 45 m/h.
distance = 45 miles = 45 miles = x miles
time 1 hour 60 min 1 min
60x = 45 x= .75 miles per 7 min
60 60
.75 miles = 75 miles
1 min 60 sec
After setting up a proportion and canceling the units until it was miles/ seconds, we cross multiplied the equation to find the variable x, which represents miles:
75 miles = x miles x= 0.02875
60 sec 2.3 sec
Therefore, in 2.3 secounds the car would travel about .03 or .02875 seconds at a constant velocity of 45 m/h.
This motion map describes the cars motion because it shows that it is moving at a constant velocity. The velocity vs. time graph shows how the car moves at a constant velocity, from an origin of 45 m/h. The position vs. time graph shows how the cars position changes, but the distance per second is consistent throughout the movement of the car.
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