Which type of radio waves have the highest frequency and are used in radar detection? microwaves x-rays waves infrared waves gam
2 answers:
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By definition we have that the energy at the top of the ramp is equal to the energy at the bottom of the ramp. This is due to the principle of energy conservation.
We have then:
The energy at the top is only potential energy:
Where,
- <em>m: mass </em>
- <em>g: acceleration of gravity </em>
- <em>h: vertical height of the ramp </em>
The energy when it falls is transformed into kinetic energy and therefore:
Where,
- <em>v: object speed. </em>
Therefore we have:
Answer:
The potential energy is transformed into kinetic energy.
Answer:
The magnitude of acceleration is reduced.
Explanation:
Force is defined as push or pull
The force is said to be<em> balance force </em>if the force are equal in size but opposite in direction. ie the object does not move or move with constant speed.
The force are to be<em> unbalanced force </em>if the force cause change in motion. ie the object has force greater than zero and has acceleration.
According to <em>Newton second law of motion </em>, acceleration depends on force acting on the object and mass of object.
F=ma
a=
When unbalanced force act on the mass of object it reduces magnitude of acceleration without changing the direction.