14) Which of the following simple machines provides the least mechanical advantage?
a) a block-and-tackle assembly that lifts a 1100
N load when you provide a 200 N input force
b) All four machines are equally efficient.
c) a wheel of radius 0.73 m with an axle of
radius 0.10 m
d) a wedge with sides 63 mm long and a base
10 mm wide
e) a lever 1 m long whose fulcrum is 63 cm
from the input force and 37 cm from the load

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?