Please Help 2 ( A baseball is pitched to a batter, who swings and hits the ball. The ball is hit directly back to the pitcher, who makes the catch while he is still standing on the mound. a. To describe the motion of the ball, what is the best choice for the reference point? Explain your answer. b. The pitcher's mound is located about 18 m from the batter. What is a good estimate for the total distance that the ball travels? Explain your answer. c. What is the displacement of the ball? Explain your answer. (1 point)

d. The ball is traveling at 90 mph (about 40 m/s) when it reaches home plate. If the ball travels at this speed the whole distance from the pitcher to the batter, how many seconds does it take? Show your work.

In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)