Kinematics (NEET Physics): Questions 6 - 9 of 229

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Question number: 6

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A point moves with uniform acceleration and V 1, v 2 and v 3 denote the average velocities in the three successive intervals of time t 1, t 2 and t 3. Which of the following relations is correct?

Choices

Choice (4) Response

a.

(V 1 – V 2) / (V 2 – V 3) = (t 1 + t 2) / (t 2 + t 3)

b.

(V 1 – V 2) / (V 2 – V 3) = (t 1 – t 2) / (t 2 + t 3)

c.

(V 1 – V 2) / (V 2 – V 3) = (t 1 – t 2) / (t 2 - t 3)

d.

None of the above

Question number: 7

» Kinematics » Motion in a Straight Line

MCQ▾

Question

What will be the ratio of the distances moved by a freely falling body from rest in 7th and 9th seconds of journey?

Choices

Choice (4) Response

a.

13: 17

b.

4: 5

c.

7: 9

d.

16: 25

Question number: 8

» Kinematics » Motion in a Plane

MCQ▾

Question

from the top of a tower, a particle is thrown vertically downwards with a velocity of 10 m/s. The ratio of the distances, covered by it in the 3rd and 2nd seconds of the motion is (Take g = 10m/s2)

Choices

Choice (4) Response

a.

3: 6

b.

6: 3

c.

5: 7

d.

7: 5

Question number: 9

» Kinematics » Average Speed and Instantaneous Velocity

Assertion-Reason▾

Assertion (Ꭺ)

The velocity of a body A relative to the body B is the sum of the velocities of bodies A and B if both travel in opposite direction on a straight line.

Reason (Ꭱ)

The velocity of a body A relative to the body B is the difference of the velocities of bodies A and B if both travel in opposite direction on a straight line.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

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