A 69.0-kg person throws a 0.0430-kg snowball forward with a ground speed of 33.0
ID: 1972915 • Letter: A
Question
A 69.0-kg person throws a 0.0430-kg snowball forward with a ground speed of 33.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.20 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.thrower m/s
catcher m/s
I keep getting response of being withing 10% correct, however not good enough. Please show steps so I may compare as to what i am doing wrong. Thank you!
Explanation / Answer
momentum is always conserved , so when first person throws the ball (69 + 0.043 ) X 2.20 = 69 X v1 + 0.043 X 33 69v1 = 150.4756 v1 = 2.181 m/s ............... speed of 1st person after throwing ball after second person cataches ball, 0.043 X 33 + 60 X 0= (60 + 0.043) X v2 v2 = 0.0236 m/s ...............speed of person who catches ball
Related Questions
Hire Me For All Your Tutoring Needs
Integrity-first tutoring: clear explanations, guidance, and feedback.
Drop an Email at
drjack9650@gmail.com
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.