That is false I think sorry if its not correct
Where is the rest of the sentence?
It will be 4 times of original thus maximum speed would be 80cm/s
Answer:
F = 0.483 N
Explanation:
Initial momentum, 
Final momentum, 
Time, t = 31 s
We need to find the force of a lead ball. We can use here the impulse momentum theorem.

F is force

So, the force is 0.483 N.
B) Copper atoms have a loosely held free electron in their outer shell that is able to move freely to other atoms.