The reason a steady force is required is ____. 11. As you are jumping upward from the floor, the force that you exert on the flo
1 answer:
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<span>Let us apply the time function of space, in the uniform uniform motion (UUM)
</span>
Formula:
Data:
S (Final position) = 30 m
So (Initial Position) = 0 m
Vo (Initial velocity) = 0 m/s
t (time) = ? (in seconds)
a (acceleration) = 2.1 m/s²
Solving:
Answer:
<span>C. 5.3s</span>
<span>Let us apply the time function of space, in the uniform uniform motion (UUM)
</span>
Formula:
Data:
S (Final position) = 30 m
So (Initial Position) = 0 m
Vo (Initial velocity) = 0 m/s
t (time) = ? (in seconds)
a (acceleration) = 2.1 m/s²
Solving:
Answer:
<span>C. 5.3s</span>
The impulse (the variation of momentum of the ball) is related to the force applied by
where
is the variation of momentum, F is the intensity of the force and 
is the time of application of the force.
Using F=1000 N and
, we can find the variation of momentum:
This can be rewritten as
where
and 
are the final and initial momentum. But the ball is initially at rest, so the initial momentum is zero, and
from which we find the final velocity of the ball:
where
Using F=1000 N and
This
where
from which we find the final velocity of the ball: