Steven is trying out for the position of pitcher on the baseball team. He can throw the baseball fast! The coach has clocked some of his pitches at 85 mph. Some of Steven's friends decided to play a joke on him and replaced one of the baseballs with one that they tampered with. Instead of a mass of 145 grams, the boys aded a lead weight so the mass is now 200 grams. Steven winds up and throws. All of the statements describe the possible result of this scenario except one. Which statements is an inaccurate explanation. Steven must throw the new ball with more force in order for it to acheive the same speed as previous throws. The difference in the mass is not significant and will not affect the force needed to throw the ball 85 mph. If Steen's throwing force is constant and the ball's mass increases, the rate of acceleration will be less. Since force equals mass times acceleration, Steven's throwing force must increases to throw the ball 85 mph.

Answer 1

The inaccurate explanation in this scenario is: "The difference in the mass is not significant and will not affect the force needed to throw the ball 85 mph."

This statement is incorrect because the increase in mass from 145 grams to 200 grams is significant enough that it will affect the force required to achieve the same speed of 85 mph. According to Newton's second law (F = ma), if the mass increases and the desired acceleration (which relates to the speed in this context) remains constant, a greater force is indeed required to achieve that acceleration. Therefore, the other statements correctly describe the situation regarding the relationship between mass, force, and acceleration.