If two bodies contact one another without slipping, and the points in contact move along different paths, the tangential components of acceleration will be and the normal components of acceleration will be . a. the same, the same
b. different, different
c. the same, different
d. different, the same

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

What is the speed of an object at a given moment?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?