Answer:
FA / FB = 100
Explanation:
given two identical cars
let their initial speed be U m/s
for car 1 let it deaccelerates with a1
0 = U² - 2*a1*(10cm)
a1 = U² / (2*(0.1))
car2 deaccelerates with a2
0 = U² - 2*a2*(10)
a2 = U² / (2*(10))
FA = m*a1
FB = m*a2
FA/FB = a1 / a2
= 10/0.1
= 100
FA/FB = 100
Answer:
The answer is D
The second law of thermodynamics
A boiling pot of water (the water travels in a current throughout the pot), a hot air balloon (hot air rises, making the balloon rise) , and cup of a steaming, hot liquid (hot air rises, creating steam) are all situations where convection occurs.
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The true statement according to Newton's laws of motion is; "there is no net force on the block during the 2nd second as zero net force keeps the motion constant."
According to the Newton first law of motion, an object will continue in its state of rest or uniform motion unless it is acted upon by a net force. The action of a net force leads to an acceleration.
In the 2nd second of the journey, there is no net force on the block hence the block continues to move at constant velocity.
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The Earth's gravity keeps the Moon orbiting us. It keeps changing the direction of the Moon's velocity. This means gravity makes the Moon accelerate all the time, even though its speed remains constant.