Kinematics-Motion in a Straight Line (NEET Physics): Questions 19 - 23 of 47

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Question number: 19

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A particle moves along x-axis with acceleration a = a 0 (1 –t/T) where a 0 and T are constants if velocity at t = 0 is zero then find the average velocity from t = 0 to the time when a = 0.

Choices

Choice (4) Response

a.

aoT4

b.

aoT5

c.

aoT2

d.

aoT3

Question number: 20

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A body falls from a height h = 200 m. The ratio of distance travelled in each 2 second during t = 0 to t = 6 second of the journey is

Choices

Choice (4) Response

a.

1: 2: 3

b.

1: 4: 9

c.

1: 3: 5

d.

1: 2: 4

Question number: 21

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A stone is dropped from a miner of height h and it reaches after t seconds on earth. From the same miner if two stones are thrown (one upwards and other downwards) with the same velocity u and they reach the earth surface after t 1 and t 2 seconds respectively, then

Choices

Choice (4) Response

a.

t = t1+t22

b.

t = t1t2

c.

t = t12t22

d.

t = t 1 - t 2

Question number: 22

» Kinematics » Motion in a Straight Line

Assertion-Reason▾

Assertion (Ꭺ)

Displacement of a body may be zero when distance travelled by it is not zero.

Reason (Ꭱ)

The displacement is the longest distance between initial and final position.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Both Ꭺ and Ꭱ are false

Question number: 23

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A particle moves along x-axis as x = 4 (t - 3) + a (t - 4) 2

Which of the following is true?

Choices

Choice (4) Response

a.

The initial velocity of particle is 4

b.

The particle is at origin at t = 0

c.

The acceleration of particle is 2a

d.

All of the above

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