hi! i have two brain teasers (more like logic questions) which I received in class today...if anyone is able to tell me the actual answers that would be excellent!!! thanks!! 1. Falling Rocks A boulder is many more itmes heavier than a pebble- that is, the gravitational force that acts on a boulder is many more times that which acts on a pebble. Yet if you drop a boulder and a pebble at the same time, the will fall together with equal accelerations (neglecting air resistance). The principal reason the haveier boulder does not acclerate more than the pebble has to do with: a)energy b)weight c)inertia d)surface area e) none of the above 2. Horse and Buggy (Which of the following is correct?) a)If action always equals reaction, a horse cannot pull a buggy becasue the action of the horse on the buggy is exactly cancelled by the reaction of the buggy on the horse. The buggy pulls backward on the horse just as hard as the horse pulls forward on the buggy, so they cannot move. b) The horse pulls forward slightly harder on the buggy than the buggy pulls backward on the horse, so they move forward. c) The horse pulls before the buggy has time to react, so they move forward. d) The horse can pull the buggy frward only if the horse weighs more than the buggy. e) The force on the buggy is as strong as the frce on the horse, but the forces are acting on two different objects, each with different masses and frictional conditions.