Please don't hurt me staff i need to get rid of points because earlier I had a point overload (it said 918/500) and I need to get rid of some so I can rank up some more thx.

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.

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

Find the mass by adding the numbers from the three sliders