Task 2:
Suppose a car left a skid mark of d feet long. The above formulas will estimate the speed s in miles per hour at which the car was traveling when the brakes were applied.
1. Complete the Table:
Dry road | Wet road | |
60 feet | 40.2m/h | 28.46m/h |
120 feet | 56.9m/h | 40.25m/h |
2. Why do you think the estimates of speed do not double when the skid marks double in length?
Because the cars have different speed in wet roads than dry roads so, the speed will not double when the skid makes double in length .
2. Based on these results, what conclusions can you make about a safe following distance?
The car will move faster on the dry road than the wet road .
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