Class 11 Physics (Part I) Chapter 2 Kinematics Quiz 5 (25 MCQs)

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1. A ball rolls off the edge of a table. The horizontal component of the ball's velocity remains constant during its entire trajectory because
2. What is the angular speed about the rotational axis of the Earth for a person standing on the surface?
3. A 10-g penny is dropped from a building that is 125 m high. The penny is initially at rest. Approximately how long does it take the penny to hit the ground?
4. What does the area under a velocity-time graph represent?
5. Which term is defined as distance traveled per unit time without regard to direction?
6. What is the unit for mass?
7. The dimensional form of "g" is
8. A flywheel with a moment of inertia of $0.5\, \text{kg}\cdot \text{m}^2$ $2\, \text{Nm}$
9. A record on a turntable is spinning and is coming to rest. If the angular velocity is 20.0 rad/s and the record slows at a rate of-5 rad/s/s, how long does it take the record to come to rest?
10. How much ground an object has covered
11. Which of the following symbols represent speed when time is zero?
12. An object moves in a circle that has a radius of .5 m, with a speed of 1 m/s. find the centripetal acceleration.
13. What does a negative sign for vectors indicate in terms of direction?
14. Luna, Elijah, and Noah are participating in a race. By looking at a position vs. time graph that is a straight line, which of the following information about their motion can be determined?
15. A torque of $10 \, \text{Nm}$ $0.5 \, \text{m}$ $2 \, \text{kg}$
16. If an object is free falling onto the Moon, which of the following would be correct?
17. Which one is NOT an example of acceleration?
18. A car is NOT accelerating if it is moving
19. You exert a force on a friend who is holding a 4.0-m-long rope. Now suppose you exert the same force on your friend, but the friend is holding an 8.0-m-long rope. How will this affect the rotational acceleration?
20. Velocity is different from speed in that velocity is speed in a given direction.
21. An object starts from rest and accelerates at 5 m/s/s for 10 seconds. What is it's final velocity?
22. An object is dropped from a bridge and time to drop is measured. Calculate the height of the bridge.Which equation is best?
23. A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s$^{2}$. What is its angular speed at the instant it goes through an angular displacement of 4.2 rad?
24. How do you choose the correct kinematic equation?
25. A train travels 8 meters in the first second of travel, 8 meters again during the second second of travel, and 8 meters again during the third second. Its acceleration is