Kinematics-Motion in a Straight Line [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 42 - 47 of 65

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Passage

A particle moves along x-axis and its acceleration at any time t is a = 2 sin (πt) , where t is in seconds and a is in m/s2 . The initial velocity of particle (at time t = 0) is u = 0.

Question 42 (2 of 3 Based on Passage)

Question MCQ▾

The distance travelled (in meters) by the particle from time t = 0 to t = t will be –

Choices

Choice (4)Response

a.

- +

b.

c.

-

d.

All of the above

Edit

Question 43 (3 of 3 Based on Passage)

Question MCQ▾

The magnitude of displacement (in meters) by the particle from time t = 0 to t = t will be –

Choices

Choice (4)Response

a.

-

b.

- +

c.

d.

All of the above

Edit

Question 44

Question MCQ▾

A motor car is travelling at 30 m/s on a circular road of radius 500 m. It is increasing its speed at the rate of 2 m/s2 . Its net acceleration is (in m/s2) –

Choices

Choice (4)Response

a.

1.8

b.

2

c.

2.7

d.

0

Edit

Question 45

Question MCQ▾

A motor car is travelling at 50 m/s on a circular road of radius 600 m. It is increasing its speed at the rate of 4 m/s2 . Its net acceleration is (in m/s2) –

Choices

Choice (4)Response

a.

4.8

b.

0

c.

2

d.

5.7

Edit

Question 46

Question MCQ▾

If t1 be the time taken by a body to clear the top of a building and be the time spent in air, then t2: t1 will be -

Choices

Choice (4)Response

a.

1: 4

b.

1: 2

c.

2: 1

d.

1: 1

Edit

Question 47

Question Assertion-Reason▾

Assertion(Ꭺ)

A cyclist is cycling on rough horizontal circular track with increasing speed. Then the frictional force on cycle is always directed towards center of the circular track.

Reason(Ꭱ)

For a particle moving in a circle, radial component of net force should be directed towards center. You have to select the correct choice.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Edit