The momentum should be .5 because you multiply the mass and velocity to get momentum
Answer:
a) 
, b) 
Explanation:
a) The final velocity of the 13.5 g coin is found by the Principle of Momentum Conservation:
The final velocity is:
b) The change in the kinetic energy of the 13.5 g coin is:
![\Delta K = \frac{1}{2}\cdot (13.5\times 10^{-3}\,kg)\cdot \left[(11.9\times 10^{-2}\,\frac{m}{s} )^{2}-(0\,\frac{m}{s} )^{2}\right]](https://tex.z-dn.net/?f=%5CDelta%20K%20%3D%20%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20%2813.5%5Ctimes%2010%5E%7B-3%7D%5C%2Ckg%29%5Ccdot%20%5Cleft%5B%2811.9%5Ctimes%2010%5E%7B-2%7D%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%20%29%5E%7B2%7D-%280%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%20%29%5E%7B2%7D%5Cright%5D)
The coefficient of kinetic friction<span> is the force between two objects when one object is moving, or if two objects are moving against each other</span>
The answer is B. Well it's the best answer.
Answer:
8N/m
Explanation:
The elastic potential energy stored can be calculated using the equation:
elastic potential energy = 0.5 × spring constant × (extension)2
assuming it is not stretched beyond the limit of proportionality.
Then calculate using the values in the question:
100J = 0.5 × spring constant × 5²
200J = spring constant × 25
spring constant = 200J ÷ 25m²
spring constant = 8J/m²
spring constant = 8N/m
