# Kinematics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 131 - 135 of 233

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## Question number: 131

» 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.

b.

c.

d.

## Question number: 132

» Kinematics » Motion in a Straight Line

MCQ▾

### Question

If t 1 be the time taken by a body to clear the top of a building and be the time spent in air, then t 2: t 1 will be -

### Choices

Choice (4) Response

a.

2: 1

b.

1: 1

c.

1: 2

d.

1: 4

## Question number: 133

» Kinematics » Motion in a Straight Line

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 true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Both Ꭺ and Ꭱ are false

## Question number: 134

» 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.

b.

c.

d.

## Passage

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

V = =

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

Eliminating t, We get y =-

## Question number: 135 (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

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