Answer: B) exactly the same as the initial momentum.
Explanation:
An inelastic collision occurs when the elements that collide remain together after the collision, and althogh the kinetic energy is not conserved because is transformed into other kinds of energy (thermal energy, for example), the linear momentum does.
This means the initial momentum before the collision will be equal to the final momentum after the collision:
Answer:
0.30581
0.24464
Explanation:
= Coefficient of static friction
= Coefficient of kinetic friction
= 75 N
= 60 N
Normal force
![F_n=mg\\\Rightarrow F_n=25\times 9.81\\\Rightarrow F_n=245.25\ N](https://tex.z-dn.net/?f=F_n%3Dmg%5C%5C%5CRightarrow%20F_n%3D25%5Ctimes%209.81%5C%5C%5CRightarrow%20F_n%3D245.25%5C%20N)
Frictional force
![F_f=\mu_sF_n\\\Rightarrow \mu_s=\frac{F_f}{F_n}\\\Rightarrow \mu_s=\frac{75}{245.25}\\\Rightarrow \mu_s=0.30581](https://tex.z-dn.net/?f=F_f%3D%5Cmu_sF_n%5C%5C%5CRightarrow%20%5Cmu_s%3D%5Cfrac%7BF_f%7D%7BF_n%7D%5C%5C%5CRightarrow%20%5Cmu_s%3D%5Cfrac%7B75%7D%7B245.25%7D%5C%5C%5CRightarrow%20%5Cmu_s%3D0.30581)
The coefficient of static friction is 0.30581
Kinetic force
![F_k=\mu_kF_n\\\Rightarrow \mu_k=\frac{F_k}{F_n}\\\Rightarrow \mu_s=\frac{60}{245.25}\\\Rightarrow \mu_s=0.24464](https://tex.z-dn.net/?f=F_k%3D%5Cmu_kF_n%5C%5C%5CRightarrow%20%5Cmu_k%3D%5Cfrac%7BF_k%7D%7BF_n%7D%5C%5C%5CRightarrow%20%5Cmu_s%3D%5Cfrac%7B60%7D%7B245.25%7D%5C%5C%5CRightarrow%20%5Cmu_s%3D0.24464)
The coefficient of kinetic friction is 0.24464
Photons are particles of electromagnetic radiation.