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Physics Forces

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1. Q: What is the push or pull on an object that can cause it to accelerate called?A: massB: forceC: densityD: speed-------------------------------------2. Q: What is the unit of measure for force?A: AmpB: SecondsC: NewtonD: Erg-------------------------------------3. Q: What is the sum of all forces acting on an object called?A: gravityB: reaction forceC: accelerationD: net force-------------------------------------4. Q: In a tug of war, when one team is pulling with a force of 100 N and the other 80 N, what is the net force?A: 20 NB: 80 NC: 100 ND: 180 N-------------------------------------5. Q: Newton's First Law of Motion is also called:A: Law of FrictionB: Law of ReactionC: Law of ActionD: Law of Inertia-------------------------------------6. Q: Newton's first Law of Motion states that if there is no net force acting on an object it will:A: remain at restB: move with constant velocityC: have no accelerationD: all of the above-------------------------------------7. Q: What does Newton's Second Law of Motion state?A: a = mFB: F = m/aC: F = maD: m = Fa-------------------------------------8. Q: In the equation F = ma, what does m represent?A: MassB: MetersC: ForceD: Acceleration-------------------------------------9. Q: How much net force is required to accelerate a 2000 kg car at 3.00 m/s2?A: 2000 NB: 4000 NC: 6000 ND: 8000 N-------------------------------------10. Q: If you apply a net force of 3 N on 100 g-box, what is the acceleration of the box?A: 5 m/s2B: 10 m/s2C: 20 m/s2D: 30 m/s2-------------------------------------11. Q: Which is true from Newton's Third law of motion?A: For every action force there is a smaller reaction force in the opposite direction.B: For every action force there is an equivalent reaction force in the opposite direction.C: Both 1 and 2D: None of the above-------------------------------------12. Q: What is the net force on 200 g ball when it hits a wall with acceleration of 10 m/s2?A: 1 NB: 2 NC: 3 ND: 4 N-------------------------------------13. Q: Are mass and weight the same?A: YesB: No-------------------------------------14. Q: What will be different on the moon than on the earth?A: massB: weightC: both 1 and 2D: none of the above-------------------------------------15. Q: What do you multiply mass by to get the weight?A: gravityB: accelerationC: densityD: energy-------------------------------------16. Q: If you mass is 40 kg, what is your weight on the Earth?A: 298B: 376C: 392D: 462-------------------------------------17. Q: If the gravity of the Moon is 1/6 of g (which is 9.8 m/s2), what is the mass of an object that has a weight of 115 N on the Moon?A: 30.2B: 70.4C: 74.9D: 89-------------------------------------18. Q: The normal force acts on any object that:A: Is in a gravity wellB: Is in a vacuumC: In in the airD: Touches a surface-------------------------------------19. Q: What is the normal force acting on a 50 kg dog?A: 440 NB: 490 NC: 540 ND: 570 N-------------------------------------20. Q: What is the force that acts between two object in contact because of action-reaction?A: Net ForceB: Friction ForceC: Rebound ForceD: Weight Force-------------------------------------21. Q: In the equation F(f) = uF(n), where F(f) is the Force of Friction and F(n) is the Normal ForceA: coefficient of frictionB: massC: weightD: gravity-------------------------------------22. Q: If you throw a 150 g book on a floor where u = 0.2, what is the force of friction?A: .16 NB: .29 NC: .36 ND: .54 N-------------------------------------23. Q: How big is the net force acting on an object with constant velocity?A: 0 NB: 1 NC: 10 ND: 100 N-------------------------------------24. Q: If a net force of 7 N was constantly applied on 400 g object at rest, how long will it take to raise its velocity to 80 m/s?A: 0 sB: 2.23 sC: 3.47 sD: 4.57 s-------------------------------------25. Q: If you push with a 5N force on a 1 kg box that is resting on a floor where u = 0.3, will the box move?A: YesB: No-------------------------------------Click here for the Answers to Physics Forces questions

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