Find moments Mx and My and the center of mass in: m1 = 6 ; P1 = (1,5)
m2 = 5 ; P2 = (3,-2)
m3 = 10 ; P3 = (-2,-1)

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

Which accurately compares concave and convex lenses?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.