- h=10m-5m=5m
- m=90Kg
- g=9.8m/s^2
Now
It's converted to kinetic energy while reaching ground.
Done
PLEASE HELP also i know this isnt physics but there was no HOPE/Gym subject for me to choose.
1 answer:
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Answer:
C
Explanation:
why because if something is conserved, it is constant, and does not change with time. A moving body may change its position, acceleration, and velocity with time, but it's energy is constant. The conversation of energy law states that: In any closed system (isolated system) the total energy of the system remain constant.
Mathematically it is written as
Answer:
40m (40m east)
Explanation:
The fist move is 70m east, and east is the positive direction so the truck initially is at +70m.
The second move is 120m to the west, since east is the positive direction, west must be the negative direction, this means the truck now is at:
The third move is 90m to the east, again, this is the positive direction, so the new position is:
The truck is at + 40m, so it ended up 40m away from its initial position and this is the resultant dispacement.