Answer:
8.0 Ns
Explanation:
Change in momentum is given as:
Final momentum - Initial momentum
= m*v - m*u
Where m = mass of ball
v = final velocity
u = initial velocity
Change in momentum = (2.0 * 3.0) - (2.0 * 7.0)
= 6.0 - 14.0 = -8.0 Ns
The magnitude will be |-8.0| = 8.0 Ns
Answer:
Velocity is the speed of something given in a direction. the SI unit of velocity is metre per second or m/s.
If you mean work out as in using calculations, I don't know how to help you. But there is a way to find out, using Fleming's left hand rule. I can't define it properly, and I don't want to copy-paste from another site, so I strongly recommend that you look it up. Try google, or more specific, BBC GCSE bitesize.
Hope this helps!
A scientific theory is supported <span>by evidence. The correct option among all the options that are given in the question is the second option. The other choices are incorrect and can be neglected. he scientific theory is often backed by repeated experiments. I hope that this is the answer that has actually come to your help.</span>
