Santa (mass 90.0 kg) is attached to his bag of toys (mass 180 kg) by a light string which is hanging over an ideal pulley as shown. The coefficient of friction between the Santa and the surface and the toy bag and the surface is 0.125. Santa and the toy bag are released from rest and begin to move.
a) Which way do Santa and the bag of toys move? Justify your answer. [2 points]
b) Draw free body diagrams for Santa and the bag of toys. [4 points]
c) Find the magnitudes of the normal forces on Santa and the bag of toys. [2 points]
d) Find the magnitudes of the friction forces on Santa and the bag of toys. [2 points]
e) Find the magnitude of the acceleration of Santa and the bag of toys and the tension in the string connecting them. [6 points]

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil