A0.145 kg baseball pitched at 43.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. if the contact time between bat and ball is 2.00 multiplied by 10-3 s, calculate the average force between the ball and bat during contact

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Charlie tosses five coins. what is the probability that all five coins will land tails up.