A 0.0450-kg golf ball initially at rest is given a speed of 25.0 m/s when a club strikes. If the club and ball are in contact for 2.00 m/s, what average force acts on the ball?
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- The figure shows two 21.6 kg ice sleds that are placed a short distance apart, one directly behind the other. A 3.99 kg cat initially standing on one sled jumps to the other one and then back to the first. Both jumps are made at a speed of 3.07 m/s relative to the ice. What are the final speeds of (a) the first sled and (b) the other sled? (a) Number (b) Number i Units Units SDA 46,0-kg girl is standing on a 161-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. The girl begins to walk along the plank at a constant velocity of 1.461 m/s relative to the plank. (a) What is the velocity of the plank relative to the ice surface? 1 m/s (b) What is the gitt's velocity relative to the ice surface?A baseball player pitches a fastball toward home plate at a speed of 41.0 m/s. The batter swings, connects with the ball of mass 290 g, and hits it so that the ball leaves the bat with a speed of 37.0 m/s. Assume that the ball is moving horizontally just before and just after the collision with the bat. If the bat and ball are in contact for 3.00 ms, what is the magnitude of the average force exerted on the ball by the bat? answer in kn