If an object moves up with a constant speed v = 100 m/sec, what is the net force acting on it? If an object moves down with constant speed v = 100 m/sec, what is the net force acting on it? (Hint: Think about Newton’s first law, if an object is moving with constant velocity, is there any net force acting on it?)

If a force of 3 Newton (3N) acts on a box and causes the box to move with an acceleration of 4 m/s2, what is the mass of the box? (Hint: Use Newton’s 2nd law.)

Paul pushes John from the left with 10 N force. Pete pushes John from the right with 8 N force. What is the net force acting on John? (Include magnitude and direction.)

Continue the previous problem, if John’s mass is 65 kg, what is John’s acceleration?

Continue the previous problem, what is the force John gives to Paul? (Hint: Consider Newton’s 3rd law.)

Continue the previous problem, what is the force John gives to Pete?

Subject | Science |

Due By (Pacific Time) | 06/20/2013 11:59 pm |

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