Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart ra
2 answers:
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Answer:
t=67.7s
Explanation:
From this question we know that:
Vo = 6m/s
a = 1.8 m/s2
D = 1500m
And we also know that:
Replacing the known values:
Solving for t we get 2 possible answers:
t1 = -44.3s and t2 = 67.7s Since negative time represents an instant before the beginning of the movement, t1 is discarded. So, the final answer is:
t = 67.7s
Answer: 0.492 s
Explanation:
We can use the following equation to solve this problem:
Where:
is the car’s final velocity
is the car’s initial velocity (it starts from rest)
is the car's acceleration
is the time we have to find
Isolating :
Finally: