Physics-
General
Easy
Question
From a point A on bank of a channel with still water a person must get to a point B on the opposite bank. All the distances are shown in fig. The person uses a boat to travel across the channel and then walks along the bank to point B. The velocity of the boat is 
and the velocity of the walking person is 
. Then,
The correct answer is:
Related Questions to study
physics-
A man crosses a river from point A. If he swims perpendicular to the bank, he reaches point C, 10 minutes later. If he swims at an angle 
to AB, he reaches B in 12.5 minutes. The width of the river is
A man crosses a river from point A. If he swims perpendicular to the bank, he reaches point C, 10 minutes later. If he swims at an angle to AB, he reaches B in 12.5 minutes. The width of the river is
physics-General
physics-
A boy throws a ball upwards with velocity 
The wind imparts a horizontal acceleration of 
to the left. The angle 
at which the ball must be thrown so that the ball returns to the boy's hand is 
A boy throws a ball upwards with velocity The wind imparts a horizontal acceleration of to the left. The angle at which the ball must be thrown so that the ball returns to the boy's hand is
physics-General
physics-
The acceleration of a train between two stations 2 km apart is shown in the figure. The maximum speed of the train is:
The acceleration of a train between two stations 2 km apart is shown in the figure. The maximum speed of the train is:
physics-General
physics-
A body is moving in a straight line as shown in velocity-time graph. The displacement and distance travelled by body in 8 s are respectively :
A body is moving in a straight line as shown in velocity-time graph. The displacement and distance travelled by body in 8 s are respectively :
physics-General
physics-
A cockroach moves rectilinearly such that, after sometime 
let its (instantaneous) velocity be equal to its average velocity over that time. Referring to the 
graph as shown in the figure for the motion of the cockrach, find the average velocity of the cockroach over the time 
.
A cockroach moves rectilinearly such that, after sometime let its (instantaneous) velocity be equal to its average velocity over that time. Referring to the graph as shown in the figure for the motion of the cockrach, find the average velocity of the cockroach over the time .
physics-General
physics-
A boy begins to walk eastward along a street in front of his house and the graph of his position from home is shown in the following figure. His average speed for the whole time interval is equal to
A boy begins to walk eastward along a street in front of his house and the graph of his position from home is shown in the following figure. His average speed for the whole time interval is equal to
physics-General
physics-
The acceleration - time graph of a particle moving along a straight line is shown. After what time the particle attains its initial velocity ?
The acceleration - time graph of a particle moving along a straight line is shown. After what time the particle attains its initial velocity ?
physics-General
physics-
Starting from rest at S=0, a boat travels in a straight line with an acceleration as shown by the a-s graph. The boat speed at s=40,90 and 200 m is
Starting from rest at S=0, a boat travels in a straight line with an acceleration as shown by the a-s graph. The boat speed at s=40,90 and 200 m is
physics-General
physics-
The figure shows the displacement-time 
graph of a body moving in a straight line. Which one of the graphs shown. represents the velocity-time 
graph of the motion of the body.
The figure shows the displacement-time graph of a body moving in a straight line. Which one of the graphs shown. represents the velocity-time graph of the motion of the body.
physics-General
physics-
Two particles are thrown from the same point in the same vertical plane, as shown in figure simultaneously. Then indicate the correct statements :
Two particles are thrown from the same point in the same vertical plane, as shown in figure simultaneously. Then indicate the correct statements :
physics-General
physics-
Two particles are projected from A and C simultaneously towards each other and they collide in air. 
and 
are horizontal and vertical components of initial velocity of particle at A. Similarly 
, 
are horizontal and vertical components of initial velocity of particle at C. Given that 
Find
Two particles are projected from A and C simultaneously towards each other and they collide in air. and are horizontal and vertical components of initial velocity of particle at A. Similarly , are horizontal and vertical components of initial velocity of particle at C. Given that Find
physics-General
physics-
A ball is projected from a point A with some velocity at an angle 30° with the horizontal as shown in the figure. Consider a target point B. The ball will hit the target if it is thrown with a velocity 
equal to
A ball is projected from a point A with some velocity at an angle 30° with the horizontal as shown in the figure. Consider a target point B. The ball will hit the target if it is thrown with a velocity equal to
physics-General
physics-
A projectile is fired with a velocity u at right angles to the slope, which is inclined at an angle q with the horizontal. The expression for the distance R to the point of impact is
A projectile is fired with a velocity u at right angles to the slope, which is inclined at an angle q with the horizontal. The expression for the distance R to the point of impact is
physics-General
physics-
In the figure, the time taken by the projectile to reach from A to B is t. Then the distance AB is equal to
In the figure, the time taken by the projectile to reach from A to B is t. Then the distance AB is equal to
physics-General
physics-
Particle A is released from a point P on a smooth inclined plane inclined at an angle a with the horizontal. At the same instant another particle B is projected with initial velocity U making an angle b with the horizontal. Both the particles meet again on the inclined plane. The relation between a and b is
Particle A is released from a point P on a smooth inclined plane inclined at an angle a with the horizontal. At the same instant another particle B is projected with initial velocity U making an angle b with the horizontal. Both the particles meet again on the inclined plane. The relation between a and b is
physics-General
