Nellie Newton, of mass 30 kg, at rest on friction-free roller blades pushes away 25-kg Jake, also on roller blades, at 1 m/s. Nellie's recoil speed is
A. 0.55 m/s.
B. 1.2 m/s.
C. 0.45 m/s.
D. 0.83 m/s.
Answer: D
You might also like to view...
It could be said that _____ favored the bee with the larger wingspan, and so the _____ evolved
a. adaptation, bee b. evolution, population c. mutation, bee d. natural selection, population e. mutation, population
Traditionally, in which region of Europe were environmental conditions the worst?
A) Benelux countries (Belgium, Netherlands, Luxembourg) B) Eastern Europe C) Iberian Peninsula D) Scandinavia E) Southern Europe
The engine of Vietnam's economic turnaround has been:
A) government seizure of key industries B) Foreign Direct Investment C) hydropower sold to its neighbors D) banana plantations
Drug manufacturers use which of the following when making time release drugs?
A) control of the thickness of a drug coating B) control of the size C) both a and b D) neither a nor b