Rusting metal is an example of a _________ change. A) phase B) state C) chemical D) physical
2 answers:
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Answer:
He has a speed of 16.60m/s after 35.0 meters.
Explanation:
The final velocity can be determined by means of the equations for a Uniformly Accelerated Rectilinear Motion:
(1)
The acceleration can be found by means of Newton's second law:
Where is the net force, m is the mass and a is the acceleration.
(2)
All the forces can be easily represented in a free body diagram, as it is shown below.
Forces in the x axis:
(3)
Forces in the y axis:
(4)
Solving for the forces in the x axis:
Where and
:
Replacing in equation (2) it is gotten:
So the acceleration for the cyclist is , now that the acceleration is known, equation (1) can be used:
However, since he was originally at rest its initial velocity will be zero ().
He has a speed of 16.60m/s after 35.0 meters
