# Kinematics-Relative Velocity (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics): Questions 4 - 7 of 8

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## Question number: 4

» Kinematics » Relative Velocity

Appeared in Year: 2014

MCQ▾

### Question

In the following displacement (x) vs time (t) graph, at which among the points P, Q, and R is the object’s speed increasing?

### Choices

Choice (4) Response

a.

R only

b.

P, Q, R

c.

P only

d.

Q and R only

## Question number: 5

» 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: 6

» 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: 7

» 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

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