You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65mi/h), and the trip takes
2 answers:
Answer:
3 hours and 28 minutes.
Explanation:
Average speed is gu=iven by,
Average speed =
∴ Total distance = Average speed × Total time
Average speed = 105
Total time = 2 hour and 20 minutes = 2.33 hour
Total distance = 105 × 2.33
Total distance = 244.65 km
The total distance between San Diego and Los Angeles is 244.65 km.
Due to heavy traffic the average speed is decreased to 70 .
Average speed =
∴ Total time =
Total time =
Total time = 3.495 hours
Total time = 3 hours and 28 minutes
Thus due to heavy traffic the time taken to travel from between San Diego and Los Angeles is 3 hours and 28 minutes.
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so to calculate time you'd utilize the general formula of
and then solve using time and make it into the y axis, so change the x's to y's, which will change a to g.
since Vyi is always usually 0, you can drop that out of this equation so the formula to find time would be
So you'll plug in and it'll be
to find the maximum height you'll have to do some trigonometry to solve it.
To make it easier draw a triangle
put the 60° mark as shown in the picture.
Then you'll need to find the hypotenuse or horizontal to find the vertical
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so then you'll use
plug in the numbers
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solve for d which will give you the hypotenuse
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Vf^2 is equal to 0 so you can just drop that number out since it's 0
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