volume_mute
How fast is the softball moving after collision?
publish date: 2023/06/23 21:05:00 GMT+10
volume_muteA ball of mass 200 grams (a softball, perhaps) is moving at 3 m/s before it collides head-on with a baseball of mass 150 grams. After the collision, the baseball is moving forward at a speed of 2.5 m/s. How fast is the softball moving after collision? (Hint: You may use grams as your unit of mass here as long as you use it on both sides of the equation.) __________ m/s
Missing Word
Correct Answer
1.125
Explanation
Answer
1.125 m/s
Solution
mvbefore = mvafter
(200 g) • 3 m/s = (200 g) • v + (150 g) • (2.5 m/s)
600 g•m/s = (200 g) • v + 375 g•m/s
225 g•m/s = 200 g•v
v = 1.125 m/s
Reference
Basic Physics: A Self-Teaching Guide