VA 0.4 kg ball traveling with the speed of 15 m s' strikes a rigid wall and rebounds elastically. If the ball is in contact with the wall for 0.045 s, what
is (a) the momentum imparted to the wall and (b) the average force
exerted on the wall?

Which statement about covalent bonds is true

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

It can take some of those large , industrial vehicles up to feet to stop when traveling only 60 mph, and therefore , you shoukd be mindful to not be jn the traffic right in front of them a. 100 feet b. 200 feet c. 335 feet d. 425 feet