Answer:
769,048.28Joules
Explanation:
A parachutist of mass 56.0 kg jumps out of a balloon at a height of 1400 m and lands on the ground with a speed of 5.10 m/s. How much energy was lost to air friction during this bump
The energy lost due to friction is expressed using the formula;
Energy lost = Potential Energy + Kinetic Energy
Energy lost = mgh + 1/2mv²
m is the mass
g is the acceleration due to gravity
h is the height
v is the speed
Substitute the given values into the formula;
Energy lost = 56(9.8)(1400) + 1/2(56)(5.10)²
Energy lost = 768,320 + 728.28
Energy lost = 769,048.28Joules
<em>Hence the amount of energy that was lost to air friction during this jump is 769,048.28Joules</em>
The distance you run divided by how long it takes
hope this is what you waned :)
4 meters per second. hope this helped
Answer:
A group is a column (vertical, up and down)
Explanation:
A group is vertical and a period is horizontal!
Hope i helped you
Have a great day!
The work-done by the wind as the bug undergoes the displacement is 80 J.
The given parameters;
- Mass of the bug, m = 45 g
- Force exerted, F = (4.0 î – 6.0j) x 10⁻² N
- Displacement of the bug, r = (8.0î - 8.0j) m
The work-done by the wind as the bug undergoes the displacement is obtained by finding the dot product of the force and the displacement;
Work done = F. r
Work done = (4.0 î – 6.0j) x 10⁻² . (8.0î - 8.0j)
Work done = (32i²) + (48j²)
Work done = 32(1) + 48(1)
Work done = 80 J.
Thus, the work-done by the wind as the bug undergoes the displacement is 80 J.
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