Medium level questions

## Motion In A Straight Line

- Want to practice more questions? Here are the Medium level questions
1
The shortest distance between the motorcyclist and the car is
A
B
C
D
A person goes to his office from his home daily at a fixed speed. But today he decided to reduce his speed by 10% as a result he reaches his office 20 minute late. The actual time he takes to reach his office daily is:
A
90 minute
B
180 minute
C
45 minute
D
64 minute
A car moves with speed for hour in east direction and with same speed for in south direction. The displacement of car from initial position is:
A
B
C
D
An automobile travelling with speed of can brake to stop within a distance of . If the car is going twice, i.e., , the stopping distance will be
A car moving on a straight road covers one third of a certain distance with 20 Km/h and the rest with 60 Km/h. The average speed is :
A
40 km/h
B
50 km/h
C
36 km/h
D
55 km/h
A particular moves vertically with an upward initial speed . If its acceleration varies with time as shown in graph in Fig. find the velocity of the particle at .
If a particle moving along a line following the law then the retardation of the particle is proportional to
A
Square of displacement
B
Square of velocity
C
Cube of displacement
D
Cube of velocity
A river flows and a man is capable of swimming at the rate of . He wishes to cross it such that the displacement parallel to river is minimum. In which direction should he swim?
A
B
C
D
The position time graph of a moving particle is shown. Then which of the below best represents its velocity time graph :
A
B
C
D
Two particles A and B start moving simultaneously along the line joining them in the same direction with acceleration of 1 m/s and 2 m/s and speeds 3 m/s and 1 m/s respectively. Initially A is 10 m behind B. What is the minimum distance between them?
A
4 m
B
8 m
C
12 m
D
16 m