15 in a far-off galaxy, an astronomer observes a moon orbiting a planet. the moon stays in orbit because of the planet’s gravity. which scenario would increase the gravity of the planet? a decreasing the distance between the moon and the planet b increasing the distance between the moon and planet c increasing the planet’s inertia d increasing the moon’s inertia

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.