Answer: 10 m/s
Step-by-step explanation:
Given
Momentum of boy 
Mass of boy is 
Momentum is the product of mass and velocity

Substitute value

Thus, the boy is moving with a velocity of 10 m/s
Answer:
0
Step-by-step explanation:
-y₁ + y₂\-x₁ + x₂ = m

I am joyous to assist you anytime.
In order from least to greatest it is: 3/8, 2/3, 3/4. To find this on your own get common denominators and compare. Hope this helps.
B because l*w*h and then you do multiplication and you get the answer