Answer:
The pack has fallen 275.6 m
Explanation:
The pack is in free fall, so it is moving by uniform accelerated motion, so we can use the following suvat equation:
where, choosing upward as positive direction:
v is the final velocity
u is the initial velocity
is the acceleration of gravity
s is the vertical displacement
For the pack in this problem,
u = 0
v = -73.5 m/s
Solving for s, we find how far the packet has fallen:
And the negative sign means the direction of the displacement is downward.
Answer:
Jupiter
Explanation:
The largest planet in our solar system by far is Jupiter, which beats out all the other planets in both mass and volume. Jupiter's mass is more than 300 times that of Earth, and its diameter, at 140,000 km, is about 11 times Earth's diameter.
Note:
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Answer:
93.3%
Explanation:
Efficiency of ramp is given by
Where n is the efficiency, W is work and subscripts o and i represent output and input respectively.
The work input is what the workers do and that is given as 15 kJ
The work output
Since work is product of force and perpendicular distance and substituting force with 3500 N and distance with 4 m we get that the work output is 3500*4=14000 J= 14 kJ
Finally, substituting 14 kJ and 15 kJ for work output and input respectively we deduce that
It means that acceleration changes with time.
