Question

Two ice skaters, Daniel (mass 65.0 kg ) and Rebecca (mass 45.0 kg ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 14.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 8.00 m/s at an angle of 55.1 ∘ from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink.

a.What is the magnitude of Daniel's velocity after the collision?

b.What is the direction of Daniel's velocity after the collision?

c.What is the change in total kinetic energy of the two skaters as a result of the collision?

Answer #1

Two ice skaters, Daniel (mass 65.0 kg ) and Rebecca (mass 45.0
kg ), are practicing. Daniel stops to tie his shoelace and, while
at rest, is struck by Rebecca, who is moving at 12.0 m/s before she
collides with him. After the collision, Rebecca has a velocity of
magnitude 8.00 m/s at an angle of 54.1 ∘ from her initial
direction. Both skaters move on the frictionless, horizontal
surface of the rink.
Part A
Part complete
What is the...

Two ice skaters, Daniel (mass 65.0 kg ) and Rebecca (mass 45.0
kg ), are practicing. Daniel stops to tie his shoelace and, while
at rest, is struck by Rebecca, who is moving at 12.0 m/s before she
collides with him. After the collision, Rebecca has a velocity of
magnitude 8.00 m/s at an angle of 54.1 ∘ from her initial
direction. Both skaters move on the frictionless, horizontal
surface of the rink.
Part A
Part complete
What is the...

Two ice skaters, Daniel (mass 70.0 kg ) and Rebecca (mass 45.0
kg ), are practicing. Daniel stops to tie his shoelace and, while
at rest, is struck by Rebecca, who is moving at 13.0 m/s before she
collides with him. After the collision, Rebecca has a velocity of
magnitude 8.00 m/s at an angle of 55.1 ∘ from her initial
direction. Both skaters move on the frictionless, horizontal
surface of the rink.
Part A What is the magnitude of...

Two ice skaters, Daniel (mass 69.0 kg) and Rebecca (mass 51.0
kg) are practicing. Daniel stops to tie his shoelace and, while at
rest, is struck by Rebecca, who is moving at 13.5 m/s before she
collides with him. After the collision, Rebecca has a velocity of
magnitude 6.3 m/s at an angle of 51.5° from her initial direction.
Both skaters move on the frictionless, horizontal surface of the
rink.
(a) What are the magnitude and direction of Daniel's velocity...

Two ice skaters, Daniel (mass = 65.0 kg) and Rebecca (mass =
45.0 kg) are practicing on the ice. Daniel stops to tie his lace,
and while at rest he is struck by Rebecca, who is moving 12.0 m/s
before she collides with him. After the collision, Rebecca is
moving forward at 8.50 m/s at a 53 degree angle with respect to her
initial direction. What is the velocity vector (magnitude and
direction, or x- and y-components) of Daniel after...

Two ice skaters, Daniel (mass 65 kg) and Rebecca (mass 45 kg),
are practicing. Daniel stops to tie his skate lace and, while at
rest, is struck by Rebecca who is moving at 13.0 m/s before she
collides with him. After the collision, Rebecca has a velocity of
magnitude 8.00 m/s at an angle of 53.1 from her initial direction.
Both skaters move on the frictionless, horizontal surface of the
rink. 1) Determine the magnitude of the x-component Daniel's
velocity...

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A ball with a mass of 0.615 kg is initially at rest. It is
struck by a second ball having a mass of 0.405 kg , initially
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