Answer:
1. floating water
2. they are equal
3.true
4.pushes back down with the force of 5n
Explanation:
I believe it is away from his arm since the question states his arm is applying an upwards force
The purpose of this lab is to determine whether the surface of an area would affect the coefficient of Friction. My classmates and I have learned a lot in this lab and that there could have been some errors in our lab because the strength of how a person pulls it might be a slight different than the normal force. I learned from this lab that the <span>surface area would have no effect on the coefficient of friction. </span>
Answer:

Explanation:
The speed of the 0.5 kg block just before the collision is found by the Principle of Energy Conservation:





Knowing that collision is inelastic, the speed just after the collision is determined with the help of the Principle of Momentum Conservation:


Lastly, the height reached by the two blocks is:




