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dianekobasher
13.07.2020 •
Physics
A motorcycle has a constant acceleration of 3.49 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a)29.0 to 39.0 m/s, and (b)59.0 to 69.0 m/s?
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Ответ:
(a)2.865 s
(b)2.865 s
Explanation:
We are given that
Acceleration,a=![3.49 m/s^2](/tpl/images/0703/9532/a9de7.png)
a.Initial speed,u=29 m/s
Final speed,v=39 m/s
We know that
Using the formula
b.Initial speed,u=59 m/s
Final speed,v=69 m/s
Again using the formula
Ответ:
14.7 lbs per square inch of earth surface which is roughly 11 billion billion pounds.