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Forces Review

Forces Review. Newton’s First Law. An object at rest stays at rest, an object in motion stays in motion unless acted on by an unbalance force. Newton’s Second Law. The acceleration of an object depends on the force applied and the mass of the object. F = ma F = net force

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Forces Review

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  1. Forces Review

  2. Newton’s First Law An object at rest stays at rest, an object in motion stays in motion unless acted on by an unbalance force

  3. Newton’s Second Law The acceleration of an object depends on the force appliedand the mass of the object. F = ma F = net force If the object is moving with a constant velocity, then a=0, so net force = 0

  4. Which of the following is the tendency of an object to remain in its state of motion? acceleration inertia force Velocity mass B

  5. Which two graphs represent the motion of an object when the net force acting on it is zero? a. c. B b. d.

  6. The picture shows the directions in which water leaves this scallop’s shell. Which picture below shows the direction the scallop will move? a. c. D b. d.

  7. The upward force on an object falling through the air is ____. A

  8. A feather will fall through the air more slowly than a brick because of ____. A

  9. For any object, the greater the force that's applied to it, the greater its ____ will be. A

  10. When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called ____ forces. A

  11. A 3,000-N force acts on a 200-kg object. The acceleration of the object is ____. C

  12. A ball is thrown straight up into the air. How does the acceleration of the ball change as it travels through the air? D

  13. An object has a mass of 25 kg. What is the weight of the object on Earth? C

  14. In the free-body diagram shown, which of the following is the gravitational force acting on the car? C

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