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12345 [234]
3 years ago
5

You are in an elevator that is accelerating you upward at 4.55 m/s^2. How much time does it take you to reach a speed of 11.0 m/

s?​
Physics
1 answer:
lys-0071 [83]3 years ago
5 0

Answer:

t = 2.01 seconds

Explanation:

It is given that,

The acceleration of the elevator is 4.55 m/s².

We need to find time taken by you to reach a speed of 11 m/s

The initial velocity of the person is equal to 0 (at rest). Let t is the time.

Using equation of kinematics as follows :

v = u +at

Acceleration = g-a and u = 0

So,

t=\dfrac{v}{g-a}\\\\t=\dfrac{11}{10-4.55}\\\\t=2.01\ s

So, 2.01 seconds is taken to reach a speed of 11 m/s.

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6 0
3 years ago
An automobile accelerates from rest at 1+ 3* sqrt (t) mph/sec for 9 seconds.
Stels [109]
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a(t) = 1 + 3√t

Integrating acceleration, we obtain velocity:
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