A 62.0-kg boy and his 36.0-kg sister, both wearing roller blades, face each other at rest....

90.2K

Verified Solution

Question

Physics

A 62.0-kg boy and his 36.0-kg sister, both wearing rollerblades, face each other at rest. The girl pushes the boy hard,sending him backward with a velocity 3.10 m/s toward the west.Ignore friction.
(a) Describe the subsequent motion of the girl.
She will move west, in the same direction as her brother, with aspeed 3.10 m/s.She will move east, directly away from her brotherwith a speed 6.89 m/s.Â Â Â Â She will move east,directly away from her brother with a speed 5.34 m/s.She will moveeast, directly away from her brother with a speed 1.55 m/s.

(b) How much potential energy in the girl's body is converted intomechanical energy of the boyâ€“girl system?
J

(c) Is the momentum of the boyâ€“girl system conserved in thepushing-apart process?
YesNoÂ Â Â Â

(d) If so, explain how that is possible considering there are largeforces acting. (If momentum is not conserved, enter \"Momentum isnot conserved.\")
This answer has not been graded yet.

(e) If so, explain how that is possible considering there is nomotion beforehand and plenty of motion afterward. (If momentum isnot conserved, enter \"Momentum is not conserved.\")

Answer & Explanation Solved by verified expert

4.1 Ratings (569 Votes)

a She will move east directly away from her brother with a speed 534 ms As the boy gets momentum in West direction the girl gets the same amount of momentum See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member