Which is one piece of evidence of seafloor spreading? a. fossil material
b. continent material
c. drilled core samples
d. ocean water samples

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and