A multi-plattered hard disk is divided into 1100 sectors and 40,000 cylinders. There are six platter surfaces. Each block holds
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Answer:
23.5 m/s
Explanation:
The velocity of the car in decelerated motion is given by
v = u + at
where
v = 0 is the final velocity
u is the initial velocity
a is the acceleration of the car
t = 3.0 s is the time it takes for the car to stop
The acceleration of the car is given by the frictional force, which is the only force acting on the car along the direction of motion, so:
where
is the coefficient of friction
Solving the previous equation for u, we find the initial velocity:
Answer:
Explanation:
The equation for the linear impulse is as follows:
where is impulse,
is the force, and
is the change in time.
The force, according to Newton's second law:
and since
the force will be:
replacing in the equation for impulse:
we see that is canceled, so
And according to the problem ,
and the mass of the passenger is
. Thus:
the magnitude of the linear impulse experienced the passenger is