Solution:
The gravitational force that acts on the bicycle system is
Now the force, that is the gravitational force is related to mass of the system and the acceleration due to gravity of the system, 'm' and 'g' respectively.
Therefore, we can write
500 = m x 10 (since , g = 10 m/s-s)
∴ m = 50 kg
Now the net vertical force acting on the student bicycle system is 0. And the vertical acceleration of system is also 0. The total horizontal force acts to the right of the system. So by Newton's 2nd law of motion, we can write
Therefore
Hence (C) is correct option.
32 kilometers per hour is equivalent to 8.88... m/s
Answer: First shot
Explanation:
A) Distance of puck from goal during the first shot = 5m away
Speed of puck during first shot = 10m/s
Time taken to score = ?
Since speed is the distance covered per unit time
i.e speed = Distance / time taken
Time taken = Distance / Speed
Time taken = 5m / 10m/s
= 0.5 seconds
B) Distance of puck from goal during the second shot = 10m away
Speed of puck during second shot = 40m/s
Time taken to score = ?
Recall that time taken = (Distance / Speed)
Time taken = 10m / 40m/s
= 0.25 seconds
It will take 0.5 seconds for the first shot to score whereas it will takes 0.25 seconds for the second shot to score.
Thus, the goalie have a better chance of blocking the first shot since it is slower than the second.
According to Newton's Third Law, the magnitude of the reaction by the nail will be - 200 N. The correct answer is option B
<h3>
Newton's Third Law of Motion</h3>
Newton's Third Law of motion states that in any action on an object or on a body, there will be equal and opposite reaction by the body.
If a hammer puts a force of 200 N on a nail, according to Newton's Third Law, the nail will put back on the hammer an equal but opposite force. That is,
The action on the nail = 200 N
The reaction by the nail = - 200 N
Therefore, the nail will put back on the hammer a force of - 200 N
Learn more about Force here: brainly.com/question/12970081
#SPJ1