Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Newton’S Laws Practice

Practice problems about Newton's Laws

  • Login to see the comments

  • Be the first to like this

Newton’S Laws Practice

  1. 1. Newton’s Laws Practice
  2. 2. 1 <ul><li>The kilogram is a measure of an object’s: </li></ul><ul><li>A) weight </li></ul><ul><li>B) gravity </li></ul><ul><li>C) force </li></ul><ul><li>D) mass </li></ul>
  3. 3. 2 <ul><li>Whirl a rock at the end of a string and it follows a circular path. If the string breaks, the tendency is of the rock is to: </li></ul><ul><li>A) continue to follow a circular path </li></ul><ul><li>B) follow a straight line path </li></ul>
  4. 4. 3 <ul><li>A sheet of paper can be withdrawn from under a milk carton without toppling it as long as the sheet is pulled quickly. This demonstrates: </li></ul><ul><li>A) gravity tends to hold the carton to the ground </li></ul><ul><li>B) the carton has inertia </li></ul><ul><li>C) for every action there’s an equal reaction </li></ul>
  5. 5. 4 <ul><li>Your weight is: </li></ul><ul><li>A) a property of mechanical equilibrium </li></ul><ul><li>B) actually your mass </li></ul><ul><li>C) the gravitational attraction between your body and the earth </li></ul>
  6. 6. 5 <ul><li>One object has twice as much mass as another object, and also has twice as much: </li></ul><ul><li>A) volume </li></ul><ul><li>B) velocity </li></ul><ul><li>C) inertia </li></ul><ul><li>D) gravitational acceleration </li></ul>
  7. 7. 6 <ul><li>Jupiter has 3 times the gravitational force of Earth. So on Jupiter, a 100kg object would have a mass of: </li></ul><ul><li>A) 100kg </li></ul><ul><li>B) 30kg </li></ul><ul><li>C) 300kg </li></ul><ul><li>D) 600kg </li></ul>
  8. 8. 7 <ul><li>An object weighs 20lbs on the Earth, another object weighs 20lbs on the moon. Which object has more mass? </li></ul><ul><li>A) Object on the Earth </li></ul><ul><li>B) Object on the Moon </li></ul><ul><li>C) Not enough information to say </li></ul>
  9. 9. 8 <ul><li>The law of inertia applies to: </li></ul><ul><li>A) objects at rest </li></ul><ul><li>B) objects in motion </li></ul><ul><li>C) both moving and nonmoving objects </li></ul>
  10. 10. 9 <ul><li>A force is a vector quantity because it has both: </li></ul><ul><li>A) mass and acceleration </li></ul><ul><li>B) action and reaction counterparts </li></ul><ul><li>C) magnitude and direction </li></ul>
  11. 11. 10 <ul><li>10kg brick and a 1kg brick are dropped in a vacuum, the force of gravity on the 10kg brick is: </li></ul><ul><li>A) zero </li></ul><ul><li>B) 10 times as much as the 1kg brick </li></ul><ul><li>C) the same as the 1kg brick </li></ul>
  12. 12. 11 <ul><li>An object is propelled along a straight-line path. If it’s force were doubled, then it’s acceleration would: </li></ul><ul><li>A) halve </li></ul><ul><li>B) quadruple </li></ul><ul><li>C) double </li></ul><ul><li>D) stay the same </li></ul>
  13. 13. 12 <ul><li>An object is propelled in a straight-line path by a force. If the mass of the object is somehow doubles, it’s acceleration: </li></ul><ul><li>A) halves </li></ul><ul><li>B) quadruples </li></ul><ul><li>C) doubles </li></ul><ul><li>D) stays the same </li></ul>
  14. 14. 13 <ul><li>An object is pulled northward at 20N and southward at 15N. What magnitude of the net force? </li></ul><ul><li>75N </li></ul><ul><li>10n </li></ul><ul><li>0N </li></ul><ul><li>15N </li></ul>
  15. 15. 14 <ul><li>A 10N falling object encounters 10N of air resistance. The magnitude of the net force is: </li></ul><ul><li>A) 100N </li></ul><ul><li>B) 10N </li></ul><ul><li>C) 0N </li></ul><ul><li>D) Infinite </li></ul>
  16. 16. 15 <ul><li>An apple is held at rest above your head. The magnitude of the net force of the apple is: </li></ul><ul><li>A) 10N </li></ul><ul><li>B) 0N </li></ul><ul><li>C) 100N </li></ul><ul><li>D) between 10N and 0N </li></ul>
  17. 17. 16 <ul><li>Which has zero acceleration? An object_____ </li></ul><ul><li>A) at rest </li></ul><ul><li>B) changing its direction </li></ul><ul><li>C) changing its speed </li></ul><ul><li>D) all of these </li></ul>
  18. 18. 17 <ul><li>Whenever the net force on an object is zero, the acceleration </li></ul><ul><li>A) may be zero </li></ul><ul><li>B) is zero </li></ul>
  19. 19. 18 <ul><li>A car has a mass of 3000kg and accelerates at 2 m/s/s. What is the magnitude of the force exerted on the car? </li></ul><ul><li>1500N </li></ul><ul><li>3000N </li></ul><ul><li>6000N </li></ul><ul><li>2000N </li></ul>
  20. 20. 19 <ul><li>A tow truck exerts a 2 m/s/s acceleration on a car with a force of 300N. The mass of the car is </li></ul><ul><li>A) 600N </li></ul><ul><li>B) 3000kg </li></ul><ul><li>C) 150kg </li></ul><ul><li>D) 1500kg </li></ul>
  21. 21. 20 <ul><li>A girl pulls a 10kg wagon with a constant force of 300N. What is the wagon’s acceleration in m/s/s? </li></ul><ul><li>A) .3 </li></ul><ul><li>B) 3000 </li></ul><ul><li>C) 30 </li></ul><ul><li>D) 1/30 </li></ul>
  22. 22. 21 <ul><li>Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude but in the opposite direction. </li></ul><ul><li>A) Always true </li></ul><ul><li>B) Sometimes true </li></ul><ul><li>C) Usually true </li></ul>
  23. 23. 22 <ul><li>A high school student hits a nail with a hammer. During the collision there is a force: </li></ul><ul><li>A) On the hammer but not the nail </li></ul><ul><li>B) On the nail but not the hammer </li></ul><ul><li>C) On both hammer and nail </li></ul>
  24. 24. 23 <ul><li>Forces always occur: </li></ul><ul><li>A) in singles </li></ul><ul><li>B) in pairs </li></ul><ul><li>C) in triplets </li></ul><ul><li>D) in space </li></ul>
  25. 25. 24 <ul><li>A rocket is able to propel itself in in the vacuum of space by firing its engines. The force that propels the rocket is: </li></ul><ul><li>A) The exhaust gasses pushing on space </li></ul><ul><li>B) The exhaust gasses heating up the ship </li></ul><ul><li>C) The exhaust gasses rushing away from the ship </li></ul>
  26. 26. 25 <ul><li>An archer shoots an arrow. Consider the action force to be the bowstring pushing against the arrow. The reaction force is: </li></ul><ul><li>A) air resistance pushing against the arrow </li></ul><ul><li>B) the grip of the archers hand on the bow </li></ul><ul><li>C) the push of the arrow against the bowstring </li></ul><ul><li>D) none of these </li></ul>
  27. 27. 26 <ul><li>A baseball player bats a ball with a force of 1000N, the ball exerts a reaction force against the bat of </li></ul><ul><li>A) 100N </li></ul><ul><li>B) 1000N </li></ul><ul><li>C) A little less than 1000N </li></ul><ul><li>D) Not enough information </li></ul>
  28. 28. 27 <ul><li>As the ball falls, the action force is the mass of the earth pulling on the ball. The reaction force is </li></ul><ul><li>A) the ball’s pull on the earth </li></ul><ul><li>B) nonexistent in this case </li></ul><ul><li>C) the pull of the opposing fans’ minds </li></ul><ul><li>D) air resistence </li></ul>
  29. 29. 28 <ul><li>A karate chop delivers a blow of 3,000N to a board that breaks. The force that acts on the hand is actually: </li></ul><ul><li>A) more than 3000N </li></ul><ul><li>B) less than 3000N </li></ul><ul><li>C) exactly 3000N </li></ul><ul><li>D) depends if the board was oak or ash </li></ul>
  30. 30. 29 <ul><li>Arnold Strongman and Suzy Small pull hard in opposite directions in a tug of war. The greatest force on the rope is exerted by: </li></ul><ul><li>A) Suzy, suprisingly </li></ul><ul><li>B) Arnold, of course </li></ul><ul><li>C) both the same </li></ul>
  31. 31. 30 <ul><li>Are you getting tired of questions about Newton’s Laws? </li></ul><ul><li>A) No way, I love Physics! </li></ul><ul><li>B) No, I can do this all day </li></ul><ul><li>C) Please give me more questions!!! </li></ul>