Question

A.) You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own mass is 90.1 kg, and the mass of the sled when empty is 19.1 kg. From shore, someone throws a baseball of mass 0.147 kg to you, and you catch it; the horizontal component of the ball s velocity is 30.8 m/s. What will be the sled s (and your) speed with respect to the surface of the pond after you catch the ball?

B.) This time, your mass is 67.1 kg and the sled s mass is 17.6 kg. You re on the sled, initially moving to the west at 9.32 cm/s. From the southern shore, your friend throws a baseball of mass 0.197 kg, which you catch as it s traveling northward with a horizontal velocity component of 32.1 m/s. What will be the sled s (and your) speed after catching the ball?

C.) Your mass is 71.8 kg, and the sled s mass is 10.0 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 5.34 m/s. What will be your speed on the ice after jumping off?

Answer 1

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