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Newton’s Laws Test Review

Newton’s Laws Test Review. Which of Newton’s Laws states for every action there is an equal and opposite reaction? 3 Which of Newton’s laws states that an object in motion will remain in motion unless acted upon by unbalanced forces? 1.

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Newton’s Laws Test Review

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  1. Newton’s Laws Test Review

  2. Which of Newton’s Laws states for every action there is an equal and opposite reaction? • 3 • Which of Newton’s laws states that an object in motion will remain in motion unless acted upon by unbalanced forces? • 1

  3. The amount of gravitational force between 2 objects depends on which two factors? • Mass of objects • Distance between objects • 1 Pound = ? Newtons • 4.448 N

  4. What is the weight of a 250 kg person? • 250x9.8 = 2450 N • What unbalanced force is needed to give a 1000 Kg truck an acceleration of 3 m/s2? • 3000 N

  5. A .50 Kg metal ball experiences a net force of 2 Newtons as it rolls down a ramp. What is the acceleration of the ball? • 4 • What is the units for acceleration? • m/s2

  6. Any object that is thrown or shot through the air is called a • Projectile • How do you find an object’s momentum? • Mass x velocity

  7. What is the momentum of a 100 kg man running at a speed of 5 m/s (include correct units)? • 500 kg x m/s • What is the velocity of a 100 kg man with a momentum of 400 kg x m/s (include correct units)? • 4 m/s

  8. How does the total momentum of 2 objects before a collision compare to the total momentum after a collision? • Same due to Law of Conservation of Momentum • An object that has balanced forces acting upon it would have a Net FORCE equal to • zero

  9. When air resistance balances the weight of a falling object, the object reaches its top speed called • Terminal velocity • The resistance of an object to changing its motion is called • inertia

  10. The amount of matter in an object is called its • Mass • A vector quantity includes both • Magnitude and Direction

  11. The value of acceleration for objects in free fall near earth is __________ (include correct units) • 9.8 m/s2 • In the Newton Car lab the rubber bands applied an action force to the small block of wood, what was the reaction force? • Block of wood on Newton car

  12. If forces occur in pairs and are equal and opposite why do they not cancel each other out? • They are acting on different objects • What is the net force on the box below? • -40 N 15 N • -25 N

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