134. a vehicle lands on mars and explores its surface. the average gravitational field on the surface of mars is 3.7 n/kg. the weight of the vehicle is defined as the gravitational force exerted on it. which of the following statements are true about the vehicle's weight? select two answers. (a) the vehicle's weight was constant until it reached the surface of mars. (b) the vehicle's weight increased while it was descending to the surface of mars. ( c) the vehicle's weight always equals the normal force exerted by mars on the vehicle while it is landing, (d) the vehicle weighs less on the surface of mars than on the surface of earth.

The harmonic motion of a particle is given by f(t) = 2 cos(3t) + 3 sin(2t), 0 ? t ? 8. (a) when is the position function decreasing? (round you

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.