Answer:
6402.86 N
Explanation:
taking into account the energy-work theorem, we can write the following equation
Where F is the force, d is the distance, m is the mass, vf is the final velocity and vi is the initial velocity.
Solving for F, we get:
Replacing m = 830 kg, vf = 0 m/s, vi = 1.8 m/s, and d = 0.210 m, we get:
Therefore, the magnitude of the force is 6402.86 N
Answer:
<em>Answer: Work equals force times distance. 3,000 J</em>
Explanation:
Work Done By A Force
When some force is applied and a displacement is achieved, the work done by the force is given by
Note that the work is a scalar magnitude as the result of the dot-product of two vectors. If the force and the displacement are parallel, then the vectors can be replaced as its magnitudes F,x and the work is
The dot product becomes a simple arithmetic product, i.e force times distance.
Sara weighs 500 Nw and she climbs up a 6 meter set of stairs. She needs to lift her weight up, so the force is the weight and the distance is the height of the stairs, thus
Answer: Work equals force times distance. 3,000 J
Yes they are all correct
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Hold on and let's discuss this realistically.
Because of gravity, there are two forces between the Earth and me. One draws me toward the Earth. The strength of that force is what I call my "weight". The other force draws the Earth toward me, and has the same strength.
The strength of these forces depends on the masses of the Earth and me. If the strength just tripled, that means that at least one of us just picked up a lot more mass. If the Earth suddenly became three times as massive, then the weight of everything and everybody on it would suddenly triple, and I'm pretty sure it would be the end of all of us before too long.
If it was only MY mass that suddenly tripled, that would mean that I had gone tearing through my house and the neighbour's house, eating everything in sight including the 2 couches, 3 dogs, and 6 TVs. Naturally, just as you would expect, my weight changed from 207 to 621, and my skin is stretched really tight.
ooohhh
At an equal time interval, acceleration increases with increase in velocity and it will maintain a positive value. When this value is compared to -9.8 m/s² (<em>acceleration due to gravity</em>), the value obtained will be greater than the value of acceleration due to gravity.
Generally, acceleration is defined as the change in velocity per change in time of motion.
<em>Acceleration</em> of an object at any given time, t, can be calculated using the following equations below;
where;
- <em>v is final velocity at t₂</em>
- <em>u is the initial velocity at t₁</em>
- <em>t₂ is the final time of motion</em>
- <em>t₁ is the initial time of motion</em>
From the formula above, we can conclude that at an equal time interval, acceleration increases with increase in velocity and it will maintain a positive value. When this value is compared to -9.8 m/s² (<em>acceleration due to gravity</em>), the value obtained will be greater than the value of acceleration due to gravity.
Learn more here: brainly.com/question/20453233