Answer:
107.3 m/s
Explanation:
The motion of Garlit is a uniformly accelerated motion (=constant acceleration), therefore we can use the following suvat equation:
where
u is the initial velocity
v is the final velocity
a is the acceleration
t is the time
In this problem, we have:
u = 0 (Garlit starts from rest)
is the acceleration
Therefore, the final velocity after t = 6.5 s is:
Answer:
0
Explanation:
When y=0, the line is on the x axis, which means that it is at a speed on 0.
The answer is D obviously as that is unnecessary for the Earth
Answer:
The coefficient of friction in the hall is 0.038
Explanation:
Given;
mass of the Parker, m = 73.2 kg
applied force on the parker, F = 123 N
frictional force, Fs = 27.4 N
the coefficient of friction in the hall = ?
frictional force is given by;
Fs = μN
Where;
μ is the coefficient of friction
N is normal reaction = mg
Fs = μmg
μ = Fs / mg
μ = (27.4) / (73.2 x 9.8)
μ = 0.038
Therefore, the coefficient of friction in the hall is 0.038
Given what we know, we can confirm that the tensional force of a system can in theory be changed without diminishing its force through the use of an ideal pulley.
<h3>What is an ideal pulley?</h3>
- A pulley is a small wheel through which a string or chain is run.
- These are used in order to change the direction of a force.
- An ideal pulley would be one in which there is no friction and the pulley itself would have no mass.
- Therefore, the force would be able to change directions without giving part of its force to the pulley system.
Therefore, we can confirm that the only known way to change the direction of a force without diminishing its value would be through the use of a frictionless and massless pulley system otherwise known as an ideal pulley.
To learn more about Friction visit:
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