<h2>
Hello!</h2>
The answer is:
The correct option is:
C. 
<h2>
Why?</h2>
To calculate the force exerted by the pump, we must remember the formula to calculate power, also, we must remember that power means work done in a determined period of time.
We have that power can be calculated by the following equation:
So, we are given the following information:
Now, substituting and calculating we have:
Hence, the correct option is:
C.
Have a nice day!
The two aircrafts are skidded for 14.9 s.
To find the answer, we need to know about the Newton's equation of motion.
<h3>What is the Newton's equation that relates velocity, distance, acceleration and time?</h3>
As per Newton's equation of motion
- V²-U²= 2aS
- V= U+at
- V= final velocity, U = initial velocity, S = distance, a= acceleration, t= time
<h3>What's the acceleration of the aircrafts that skidded from 35 m/s after the collision for 112.1 m before achieving 15 m/s?</h3>
- Here, U = 35 m/s, V = 15m/s, S= 112.1 m
- So, 15²- 35²= 2a×112.1= 224.2a
=> a= -1000/224.2= -4.5 m/s²
<h3>What's the time taken to stop if these aircrafts are de-accelerated by 4.5 m/s² from 35m/s?</h3>
- Here, U = 35 m/s, V=15 m/s a= -4.5 m/s²
- 35= 15+(-4.5)t
=> t= 20/4.5 = 4.4 s
Thus, we can conclude that the two aircrafts are skidded for 4.4 s.
Learn more about the Newton's equation of motion here:
brainly.com/question/25545050
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Answer: F
Explanation: The boy is controlling the bowling ball therefore he can use greater force
