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 added a lead weight so the mass is now 200 grams. Steven winds up and throws.
All of the statements describe the possible results of this scenario except one. Which statement is an inaccurate explanation?
(1 point)
Steven must throw the new ball with more force in order for it to achieve 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 Steven'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 increase to throw the ball 85 mph.
The statement "If Steven's throwing force is constant and the ball's mass increases, the rate of acceleration will be less" is an inaccurate explanation. According to Newton's second law of motion, the acceleration of an object is inversely proportional to its mass. If the mass of the ball increases, the rate of acceleration will be greater, not less.
The statement that is an inaccurate explanation is:
The difference in the mass is not significant and will not affect the force needed to throw the ball 85 mph.
The statement that is an inaccurate explanation is:
The difference in the mass is not significant and will not affect the force needed to throw the ball 85 mph.
Explanation:
According to Newton's second law of motion, force equals mass times acceleration (F = ma). In the given scenario, the mass of the ball has increased from 145 grams to 200 grams. Since force is directly proportional to mass, a greater force will be required to accelerate the heavier ball to the same speed of 85 mph. Therefore, the statement suggesting that the difference in mass is not significant and will not affect the force needed is inaccurate. The correct explanation is that if Steven's throwing force is constant and the ball's mass increases, the rate of acceleration will be less, and Steven must throw the new ball with more force in order for it to achieve the same speed as previous throws.