Answer:
1.63
Explanation:
If you have the following options:
<u>A. 1.63</u>
B. 1.50
C. 1.49
D. 1.33
E. 1.02
The magnitude of the action–reaction pair between the two boxes (A and B) will be "18.2 N".
According to the question,
Mass of box A,
Mass of box B,
Horizontal force,
From the Newton's law,
→ 
or,
→ 
Bu substituting the values, we get
→ 
→ 
→ 
We can see that between the two boxes, the action-reaction pair exist.
then,
→ 
→ 
→
(magnitude)
Thus the above solution is appropriate.
Learn more about the magnitude here:
brainly.com/question/13545862
Answer:
B
Explanation:
Remark
If, when it reaches its maximum height where the PE is the greatest, that the maximum energy is when the ball is first kicked. That would mean its starting energy is 10 Joules.
Formula
KE = 1/2 m v^2
Givens
KE = 10 J
m = 0.2 kg
v = ?
Solution
10 = 1/2 * 0.2 * v^2
10 * 2 = 0.2 * v^2
20 = 0.2 * v^2
20/0.2 = v^2
100 = v^2
v = 10 m/s
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