Kinematics-Motion in a Straight Line (NEET Physics): Questions 27 - 29 of 47

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Question number: 27

» Kinematics » Motion in a Straight Line

MCQ▾

Question

The position of a particle moving in the xy-plane at any time t is given by x = (4t 2 - 8t) metres, y = (5t 2 - 10t) metres. Select the correct statement about the moving particle from the following

Choices

Choice (4) Response

a.

The velocity of the particle is zero at t = 1 second

b.

The velocity of the particle is zero at t = 0 second

c.

The acceleration of the particle is zero at t = 0 second

d.

The velocity and acceleration of the particle are never zero

Question number: 28

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A car accelerates from rest at a constant rate α for some time, after which it decelerates at a constant rate β and comes to rest. If the total time elapsed is t, then the maximum velocity acquired by the car is

Choices

Choice (4) Response

a.

(α2β2αβ)t

b.

(α2+β2αβ)t

c.

αβtα+β

d.

(α+βαβ)t

Question number: 29

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A ball is thrown vertically upwards. Which of the following graphs represent velocity-time graph of the ball during its flight? (Air resistance is neglected)

Choices

Choice (4) Response

a.

b.

velocity-time graph of the ball - Choice B

Velocity-Time Graph of the Ball - Choice B

velocity-time graph of the ball - Answer B

c.

velocity-time graph of the ball - Choice C

Velocity-Time Graph of the Ball - Choice C

velocity-time graph of the ball -Answer c

d.

velocity-time graph of the ball -Choice D

Velocity-Time Graph of the Ball -Choice D

velocity-time graph of the ball - Answer D

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