10 Questions
| Attempts: 325

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Questions and Answers

- 1.Going from city A to city B, a car accelerates uniformly from rest, then moves with constant velocity, and finally retards uniformly. If the ratio of time taken is 1:6:1 and the maximum speed is 80 km h
^{-1}, Then what is the average speed over the journey?- A.
- B.
- C.
- D.

- 2.A body is released from top of a tower of height X m. After 1 s, the body I stopped and then instantaneously released. What will be its height (from the ground) after next 2 s? (take g = 10 m/s
^{2})- A.
(X - 5)

- B.
(X - 25)

- C.
(X - 20)

- D.
(X - 40)

- 3.A body travels 80 m in first 2s and 100 m in the next 4s with deceleration. What will be the velocity of the body at the end of 5
^{th}second?- A.
5 m/s

- B.
25 m/s

- C.
20 m/s

- D.
40 m/s

- 4.An object starts from rest and travels a distance 3D with uniform acceleration, then moves a distance 4D with uniform velocity and finally comes to rest after moving a distance of 5D under uniform retardation. What is the ratio of the average velocity to maximum velocity?
- A.
1/3

- B.
3/5

- C.
4/7

- D.
8/9

- 5.An object is released from the top of a tower. Which of the following statement is correct about the time taken by the particle in falling through the successive distance of 1 m each?
- A.
All will be equal

- B.
- C.
- D.
None of These

- 6.A passenger is standing on the platform. The passenger is standing at the beginning of the fourth coach of a train. How many coaches are there on the train if it takes 6 seconds by the fourth coach and 24 seconds by the rest of the train (including 4
^{th}coach) to cross the passenger, then how many coaches are there in the train?- A.
13

- B.
18

- C.
15

- D.
17

- 7.An object starts sliding from the top of a triangular box with a base of 15 inches and a height of 8 inches. The Inclined height of the box is divided into three parts in such a way that the object takes equal times to slide down these parts. What will be the length of these parts?
- A.
15/9, 5, 75/9

- B.
20/9, 60/9, 100/9

- C.
17/9, 51/9, 85/9

- D.
10/9, 30/9, 50/9

- 8.A ball is released from the top of a tower. Another ball is released from a point ‘H
_{2}’ meter below the top when the first ball has descended ‘H_{1}’ meter from the top. If booth ball are released from rest and reach the ground simultaneously then what is the height of the tower?- A.
- B.
- C.
- D.

- 9.A heavy stone is dropped into a well in which the water level is at depth H below the ground level. If the speed of the sound is ‘
*v*’ then the time after which the splash is heard will be given by- A.
- B.
- C.
- D.

- 10.The height of a container is 1.5 m is being lifted up by a crane, with an acceleration of 2 m/s
^{2}. One second after the start, a bolt from the roof of the container starts falling. What will be the displacement of the bolt before touching the floor of the container?- A.
3/5

- B.
3/8

- C.
2/3

- D.
1/4

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