# Kinematics-Average Speed and Instantaneous Velocity (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 47 - 51 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

## 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: 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 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: 49

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

### Question

A car of 500 kg moving with a velocity of 18 km/hr is stopped by the brake force of 500 N. The distance covered by it before coming to rest is –

### Choices

Choice (4) Response

a.

1.44 m

b.

12.5 m

c.

12 m

d.

16.2 m

## Question number: 50

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

### Question

A train has to negotiate a curve of radius 600 m. By how much should the outer rail be raised with respect to inner rail for a speed of 48 km/hr. The distance between the rails is 2 m.

### Choices

Choice (4) Response

a.

12 m

b.

12 cm

c.

4.5 m

d.

4.5 cm

## Question number: 51

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

### Question

A body of mass 0.02 kg falls from a height of 5 meter into a pile of sand. The body penetrates the sand a distance of 5 cm before stopping. What force has the sand exerted on the body?

### Choices

Choice (4) Response

a.

1.96 N

b.

-0.196 N

c.

-19.6 N

d.

0.0196 N

f Page