Kinematics-Average Speed and Instantaneous Velocity (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 44 - 48 of 108

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 44

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A particle moves in a circle of radius 10cm with a linear speed of 20m/s. The angular velocity will be –

Choices

Choice (4) Response

a.

25 rad/s

b.

75 rad/s

c.

50 rad/s

d.

200 rad/s

Question number: 45

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The angular speed with which the earth would have to rotate on its axis so that a person on the equator would weigh (3/5) th as much as present, will be: (Take the equatorial radius as 6400 km)

Choices

Choice (4) Response

a.

7.8 x 10 3 rad/sec

b.

7.8 x 10 4 rad/sec

c.

8.7 x 10 3 rad/sec

d.

8.7 x 10 4 rad/sec

Passage

Velocity at a general point P (x, y) for a horizontal projectile motion is given by

V = =

The image is velocity graph.

The Image Is Velocity Graph.

here in following fig we shows that the projectile motion of particle at some point to another point.

α is angle made by v with horizontal in clockwise direction Trajectory equation for a horizontal projectile motion is given by x = v x t = ut

y =- () gt 2

Picture display is velocity graph.

Picture Display Is Velocity Graph.

here in fig we shows that angle α made by v with horizontal in clockwise direction

Eliminating t, We get y =-

Question number: 46 (1 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

An aeroplane is in a level flying at an speed of 144 km/hr at an altitude of 1000 m. How far horizontally from a given target should a bomb be released from it to hit the target?

Choices

Choice (4) Response

a.

471.34 m

b.

671.43 m

c.

371.34 m

d.

571.43 m

Question number: 47 (2 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A ball rolls off top of a stair way with a horizontal velocity u m/s. If the steps are h m high and b meters wide, the ball will just hit the edge of nth step if n equals to

Choices

Choice (4) Response

a.

b.

c.

d.

Both c. and a. are correct

Question number: 48 (3 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

An aeroplane is flying horizontally with a velocity of 720 km/h at an altitude of 490 m. When it is just vertically above the target a bomb is dropped from it. How far horizontally it missed the target?

Choices

Choice (4) Response

a.

2000 m

b.

200 m

c.

1000 m

d.

100 m

f Page
Sign In