Answer:
The friction of the piano and the weight
Explanation:
I believe it’s 8.3 to be precise
The total momentum of a system is the vector sum of all the individual masses that comprise the system.
Moreover, To calculate the total momentum of two objects during a collision, add their individual momentums. You can calculate the momentum for each object using the formula p=mv, where p is the momentum, m is the mass, and v is the velocity. The law of conservation of momentum can be expressed as follows. For a collision between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
You can learn more about this at:
brainly.com/question/20301772#SPJ4
A - 3
B - 1
C - 2
D - 4
E - 5
Answer:
the sodium atom and the chlorine atoms share electrons to form ionic bonds
