10 Questions
| Attempts: 97

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Questions and Answers

- 1.Which of the following acceleration vs. time graphs represent the complete motion of an object thrown vertically upward?
- A.
- B.
- C.
- D.

- 2.Which of the following pair of graphs represent the same motion?
- A.
1

- B.
2

- C.
3

- D.
4

- 3.The figure shows the four paths of a ball hit by a batsman in the game of cricket. If there is no air resistance then which of the following is the correct order of the initial horizontal velocity component in decreasing order?
- A.
1>4>3>2

- B.
2>3>4>1

- C.
4>3>2>1

- D.
1>2>3>4

- 4.A horizontally traveling bullet pierces a paper screen A and then B which are separated by a distance of 45 m. The hole made by the bulletin screen A is 20 cm above the hole in screen B. What will be the velocity of the bullet when it hits screen A? Neglect the resistance of paper and air.
- A.
450 m/s

- B.
225 m/s

- C.
332 m/s

- D.
625 m/s

- 5.The centripetal acceleration of a particle moving in a circle of radius r is given as a
_{c}= n^{2}rt^{2}, where n is a positive constant. Which of the following option is correct for the above motion?- A.
- B.
- C.
- D.
None of these

- 6.A ball is projected at an angle with the velocity of
*u*. What will be the average velocity between the point of projection and the highest point of the projectile?- A.
- B.
- C.
- D.

- 7.A ball is moving in a circle of a radius of 12 m with a speed of 2 m/s. The speed of the ball increases by 5 m/s in every one second. The total acceleration of the body after one second is:
- A.
- B.
- C.
- D.

- 8.On the basis of the diagram which of the following statement is true:
- A.
Particle 1 will reach the ground first

- B.
All the particles will reach the ground simultaneously

- C.
All the particles will hit the ground with same speed

- D.
Only particle 2 and 3 will hit the ground with same speed

- 9.A particle is thrown at some angle within the gravitational field of the earth with some initial velocity. Which of the following graph is not true in this context?
- A.
- B.
- C.
- D.

- 10.An object is moving in a circular path of radius ‘R’ such that its speed ‘
*v*’ varies as where x is the distance and is a positive constant. What will be the acceleration of the object?- A.
- B.
- C.
- D.

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