Kinematics-Motion in a Straight Line (NEET Physics): Questions 30 - 33 of 47

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Question number: 30

» Kinematics » Motion in a Straight Line

Assertion-Reason▾

Assertion (Ꭺ)

The position-time graph of a uniform motion in one dimension of a body can have negative slope.

Reason (Ꭱ)

When the speed of body decreases with time, the position-time graph of the moving body has negative slope.

Choices

Choice (4) Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

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

Question number: 31

» Kinematics » Motion in a Straight Line

MCQ▾

Question

the x-axis at certain times is given below

the x-axis at certain times is given below

t (s)

0

1

2

3

x (m)

-2

0

6

16

Which of the following describes the motion correctly

Choices

Choice (4) Response

a.

Uniform, accelerated

b.

Non-uniform, accelerated

c.

Uniform, decelerated

d.

All of the above

Question number: 32

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A particle moving in a straight line covers half the distance with speed of 10 m/s. The other half of the distance is covered in two equal time intervals with speed of 5.5 m/s and 4.5 m/s respectively. The average speed of the particle during this motion is

Choices

Choice (4) Response

a.

15 m/s

b.

10 m/s

c.

24 m/s

d.

25 m/s

Question number: 33

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A particle moves as such acceleration is given by a = s 3 sin4t, then:

  1. The acceleration of the particle becomes zero after each interval of π/4 second
  2. The initial velocity of the particle must be zero
  3. The particle comes at its initial position after sometime
  4. The particle must move on a circular path

Choices

Choice (4) Response

a.

2 and 4

b.

1 and 2

c.

1, 2, 3

d.

1 and 3

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