If the resultant acceleration of a 2 kg ball is 5.0 m/s2 horizontally, the resul

Question

If the resultant acceleration of a 2 kg ball is 5.0 m/s2 horizontally, the resultant force must be A student is in-line skating and rolling forward on a flat section of road at 10 m/s. Her mass is 50 kg. The rolling friction acting on the wheels of her skates is 10 N backward. Air resistance creates a 15 N force also acting backward on her. If these are the only horizontal forces acting on Amy, what is her horizontal acceleration as a result of these forces? A collision occurs between two football players. Player 1 has a mass of 75 kg and a velocity of 6 m/s and player 2 has a mass of 150 kg and a velocity of -3 m/s. Assuming an ELASTIC collision, what is the final velocity of player 2?

Explanation / Answer

1.F=ma =2x5 =10N 2.a=(10+15)/50 = 0.5 m/s^2 in backward direction 3.+3m/s^2

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