A 9.30 kg mass is moving at a constant velocity of 4.00 m/s.
1 answer:
1) The magnitude of the force is 4.37 N
2) The distance covered is 17.0 m
Explanation:
1)
In order to find the force needed to bring the mass at rest, we need to find its acceleration first.
The acceleration is given by:
where
u = 4.00 m/s is the initial velocity of the mass
v = 0 is its final velocity
t = 8.47 is the time interval
Solving the equation,
Now we can find the net force acting on the mass, which is given by Newton's second law:
where
m = 9.30 kg is the mass
is the acceleration
Substituting,
So, the magnitude of the force is 4.37 N.
2)
The distance through which the mass has moved can be found by using the following suvat equation:
where
u = 4.00 m/s is the initial velocity
t = 8.47 s is the time
is the acceleration
s is the distance covered
Solving for s,
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