MULTIPLE CHOICE:

TEST 1

1.) Gravity is noted with the letter____.

A. d B. m C. p D. g

2.) Acceleration due to gravity on Earth is equal to____.

A. 8.9m/s B. 9.8m/s C. 8.9m/s² D. 9.8m/s²

3.) The force of gravity is measured in____.

A. m/s B. Newtons C. m/s² D. kg(x)m/s

4.) If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown, what is its displacement?

A. 0 m B. 20 m C. -20 m D. 40 m

5.) which of the following is a measure of how much force is acting on certain area?

A. force B. friction C. pressure D. gravity

6.) A body moves with uniform velocity, its acceleration is____.

A. zero B. finite C. infinite D. negative

7.) A body is thrown upward and after some time the body reaches its maximum height. At maximum height____.

A. its velocity and acceleration both are zero.

B. its velocity is zero and acceleration is maximum.

C. its velocity is maximum and acceleration is minimum.

D. its velocity is zero and acceleration is equal to acceleration due to gravity(g).

8.) A train of 150 m length is going toward north at a speed of 10m/s. A parrot flies at a speed of 5 m/s towards south direction parallel to the railway track. The time taken by parrot m/s towards south direction parallel to the railway track. The time taken by parrot to cross the train is____.

A. 8 s B. 10 s C. 12 s D. 15 s

9.) Pressure is measured in what units?

A. m/s B. moles C. Pascals D. Newtons

10.) Pressure is equal to force divided by what?

A. area B. time C. mass D. distance

TEST 2

35. Which is a possible unit for acceleration? A. m/s B. "/S c. m /s D. [ ] SZ 36. Friction is a force that always acts A. perpendicular to, an object's motion. C. in the same direction as an object's motion. B. opposite to an object's motion. D. none of the above answers is correct. 37. The law of inertia states that an object A. will continue moving at the same velocity unless an outside force acts on it. B. will continue moving in a straight line unless an outside force acts on it. C. that is not moving will never move unless a force acts on it. D. at rest remain at rest unless acted on by an outside force. E. will do all of the above. 38. Compared to its mass on Earth, the mass of a 10- kg object on the moon will weigh A. the same amount B. less C. more 39. The mass of a lamb that weighs 110 N is about A. 1 kg B. 1 1 kg C. 110 kg D. 1100 kg 40. Which has more mass, a kilogram of feathers or a kilogram of iron? A. The feathers B. The iron C. Either D. They both have the same mass 41. After you place a book on a high shelf, we say the book has increased A. kinetic energy C. elastic potential energy B. chemical energy D. gravitational potential energy 42. Which requires more work: lifting a 50.0 kg sack a vertical distance of 2.0 meters or lifting a 25.0 kg sack a vertical distance of 4.0 meters? A. Lifting the 50 kg sack C. Both require the same amount of work B. Lifting the 25 kg sack D. Cannot be determine. 43. Which of the following statements indicates the best way to increase power? A. Increase the amount of work done in a given time or do a given amount of work in less time. B. Increase the amount of work done in a given time or do a given amount of work in less time. C. Decrease the amount of work done in a given time or do a given amount of work in less time. D. Decrease the amount of work done in a given time or do a given amount of work in more time. 44. In the absence of friction, a machine_ A. would be less efficient. C. would have greater output work than input work. B. would have equal input and output work. . D. would have greater input work than output work. '45. A 0.250 kg cart moving at 0.400 m/s has how much momentum? A. 0.1 kg- m/s C. 10 kg- m/s B. 1 kg- m/s D. 100 kg - m/s