Answer:
720 J
Explanation:
Kinetic Energy = 1/2 * m *(v*v)
M= 90 kg
V=4 m/s
KE=1/2 * 90 * (4*4)
KE= 45*16= 720 J
True...<span>A moving </span>object<span> with a zero </span>resultant force<span> keeps moving at the same speed and in the same direction. If the </span>resultant force<span> acting on an </span>object<span> is not zero, a stationary </span>object<span> begins to </span>accelerate<span> in the same direction as the </span>force. A movingobject<span> speeds up, slows down or changes direction</span>
Answer:
When there is no detergent in the water, you'll achieve a floating paper clip!
Explanation:
<h2>Answer:</h2>
<em><u>The energy of a system always remains constant as it can be converted from one type two another type. It can never be lost or created.</u></em>
<h3>Explanation:</h3>
Lets take an example of the boy riding a bicycle.
The boy is using the biochemical energy in his body to run the pedals up and down in a cycle form.
The biochemical energy is converted into the potential energy in the pedal.
As the pedal moves, it gives energy to move the wheels of the cycle and consequently the cycle will move forward.
Hence the potential energy is converted into the kinetic energy.
If the road is not clear, a lot of energy is needed to move the wheels or cycle as compared to clear road. Because some of the energy will be converted into heat during friction.
