Why does it hurt more to land on the wooden floor of a gym than on a padded mat?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

How do you know how many valence electrons an atom has?

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.