# Kinematics (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics): Questions 11 - 15 of 24

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## Question number: 11

» Kinematics » Relative Velocity

MCQ▾

### Question

A thief is running away on a straight road with velocity 3 m/s. A policeman chases him with velocity 3.5 m/s. Initially the thief was 250 m ahead of the policeman. The time taken by policeman to catch the thief is –

### Choices

Choice (4) Response

a.

9 min

b.

7 min 15 sec

c.

7 min 50 sec

d.

8 min 20 sec

## Question number: 12

» Kinematics » Relative Velocity

MCQ▾

### Question

A train of length l (165 m) is going towards north directional constant speed v1=12 m/s. A parrot flies at a constant speed of v2 = 3 m/s towards south parallel to be railway track. The time taken by the parrot to cross the train is –

### Choices

Choice (4) Response

a.

15 s

b.

18 s

c.

11 s

d.

9 s

## Question number: 13

» Kinematics » Projectile Motion

MCQ▾

### Question

The maximum height attained by a projectile is increased by 15 % by increasing its speed of projection, without changing the angle of projection. The percentage increase in the horizontal range will be –

### Choices

Choice (4) Response

a.

20 %

b.

10%

c.

15%

d.

5%

## Question number: 14

» Kinematics » Relative Velocity

MCQ▾

### Question

A boat crossing a river moves with a velocity v relative to still water. The river is flowing with a velocity with respect to the bank. The angle with respect to the flow direction with which the boat should move to minimize the drift is–

### Choices

Choice (4) Response

a.

1350

b.

600

c.

300

d.

1200

## Question number: 15

» Kinematics » Frame of Reference

MCQ▾

### Question

A train Y of 400 meter length travelling at 75 km/hr overtakes another train X of 200 meter length travelling at 50 km/hr velocity in the same direction. The time train Y takes to completely pass train X –

### Choices

Choice (4) Response

a.

76.32 sec

b.

22.5 sec

c.

86.4 sec

d.

108.3 sec

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