Figure gives the potential energy function U(r) of a projectile, plotted outward from the surface of a planet of radius R. If the projectile is launched radially outward from the surface with a mechanical energy of - 2.0 x 109 J what are?

(a) Its kinetic energy at radius r - 1.25R, and

(b) Its turning point (see Section 8-6) in terms ofRS?

Transcribed Image Text:

U (10° J)