The figure shows a 100-kg block being released from rest from a height of 1. 0 m. It then takes it 0. 90 s to reach the floor. What is the mass m of the other block? the pulley has no appreciable mass or friction.

The authors use the word “backbone” in lines 3 and 39 to indicate that

Cartels control the production and pricing of goods mainly through a) the elimination of competition. b) the cooperation of their members. c) the limitation of price controls. d) the manipulation of government pressure.

What are spirit and opportunity designed to do?