Unformatted text preview: ce
in the direction, which
causes it to move so that its velocity is given by
, with in seconds and in m/s.
Which is a correct expression for the power in Watts due to the net force, as a function of time?
(A) (B) (C) (D) with in Newtons. Thus,
in Watts. (g) [4pt] Mass A, traveling to the right at 3.0 m/s, has an elastic
collision with a stationary mass B, and bounces back to the left
at the 1.0 m/s. What is the speed of mass B after the collision?
(A)
(C) 1.0 m/s
3.0 m/s (B)
(D) 2.0 m/s
4.0 m/s (E) More information is needed to answer. Before:
3.0 m/s
A B After:
A
1.0 m/s B
? In an elastic collision, the relative speeds are the same before and after the collision.
This means that after the collision,
m/s. Since
m/s, this
implies that
m/s....
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 Fall '12
 ScottYost
 Physics, Energy, Force, Kinetic Energy, Mass, Velocity

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