When Babe Ruth hit a homer over the 7.5 -high right-field fence 98  from home plate, roughly what was the minimum speed of the b

all when it left the bat? Assume the ball was hit 1.3  above the ground and its path initially made a 34 angle with the ground.

Express your answer using two significant figures.

求初速=?公尺每秒
  
位什麼不是46?         上面的單位均為公尺和度和秒

[ 本帖最後由 heronathan123 於 2008-10-11 01:27 編輯 ]