I think you're asking what his 'ke' will be. Does that mean his 'kinetic energy' ? Well, that'll just be
<em>ke = (1/2) x (his mass) x (his speed when he touches down)²</em>
B. a car on a track, a stop watch, and a ruler
Answer:
The answer is 0.83 seconds.
Explanation:
The formula of free fall is following:
Where g=9.8 m/s^2 and t=2 seconds, the rock takes:
19.6 meters. This is the half distance of the cliff. The whole distance is 39.2 meters. So it takes:
2.83 second to fall down completely. The rock takes the second half of the cliff in 0.83 seconds
Answer:
5 m/s^2 will be the acceleration
Explanation:
comment down for further explanation if you want
Answer:
Explanation:
When the velocity of an object changes, it would experience an impulse. If the mass of the object stays the same, and that the object moves along a line, the value of the impulse would be:
, where
- is the mass of the object, and
- is the change in the velocity of the object.
On the other hand, the change in the object's velocity can be found with the equation:
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Note that if is in and is in , the unit of would be .
<h3>a.</h3>
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<h3>b.</h3>
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<h3>c.</h3>
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<h3>d.</h3>
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Note that and are of opposite signs. The reason is that the object's velocity has changed direction in this period.
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