a) You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own mass is 75.0 kg, an

[answerhappygod]

a) You are sitting in a sled, at rest on a pond covered with
nice, thick, frictionless ice. Your own mass is 75.0 kg, and the
mass of the sled when empty is 21.1 kg. From shore, someone throws
a baseball of mass 0.165 kg to you, and you catch it; the
horizontal component of the ball s velocity is 27.2 m/s. What will
be the sled's (and your) speed with respect to the surface of
the pond after you catch the ball?
21.1 cm/s
2.80 cm/s
4.66 cm/s
5.97 cm/s
b) This time, your mass is 80.5 kg and the sled's mass
is 17.4 kg. You re on the sled, initially moving to the west at
5.77 cm/s. From the southern shore, your friend throws a baseball
of mass 0.131 kg, which you catch as it s traveling northward with
a horizontal velocity component of 28.8 m/s. What will be the sled
s (and your) speed after catching the ball?
4.68 cm/s
21.5 cm/s
4.85 cm/s
6.93 cm/s