Any answers NOT recorded on the Scantron answer pag will NOT be counted Figure I

Question

Any answers NOT recorded on the Scantron answer pag will NOT be counted Figure I acting on the box? mass m is at rest on top of the table. What is the minimum number of forces A)O B)1 C)2 D)3 E)4 10. In Figure 1 above, a box of mass m is accelerating to the right on the top of the table with friction. What is the minimum number of forces acting on the box? A)0 B)1 C)2 D)3 E)4 11. What is the direction of the velocity of a mass traveling with uniform circular motion? A) Away from the center of the circle B) Tangent to the circle C) Toward the center of the circle 12. The equation, EF-0, is known as which of Newton's Laws? A)I B)II C) III D) Universal Gravitation 13. "Which of Newton's Laws explains why a mass subject to a net force accelerates? A) I B) 11 C)111 D) Universal Gravitation 14. If you were standing on a weighing scale in an elevator that had an upward acceleration of 2.75 m/s?, the reading on the scale as the would be equal to your mass times A) 9.80 m/s+2.75 m/s B) 9.80 m/s C) 9.80 m/s2-2.75 m/s? D) Zero. E) None of the other answers is correct!

Explanation / Answer

1. two forces are acting on mass, (a) its weight (b) normal reaction.option (c) is correct

2. along with normal reaction and weight applied force and frictional force also comes into consideration. option (e) is correct

3.option (b) tangent to the circle

4. option (b) Newton's second law

5.option (a) is correct, object changes its states of motion unless and until and external force apply on it.

6. acceleration during upward motion is = g+a = 9.8+2.75

optoon (a) is correct

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comment in case any doubt .. Good luck

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