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Pradhan Mantri Swasthya Suraksha Yojana (PMSSY)

Pradhan Mantri Swasthya Suraksha Yojana (PMSSY) is a government scheme under the Ministry of Health and Family Welfare. Government schemes are... View Article

21 May 2021: The Hindu Analysis

UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 21st May 2021. Important news and views to boost... View Article

What are the differences between the mass of an object and its weight?

The quantity of matter in a body is called mass. The force with which earth attracts objects towards center is called weight. Weight and... View Article

Why is it advised to tie any luggage kept on the roof of a bus with a rope?

When some luggage is put on the roof of a bus that is initially at rest, the acceleration of the bus in the forward direction will exert a force... View Article

An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the earth.

Answer: Artificial satellites are man-made objects that orbit the Earth and other planets in the Solar System. The radius of the orbit = 42250... View Article

A driver of a car travelling at 52 km h^-1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h^-1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied?

The total displacement of each car can be achieved by calculating the area beneath the speed-time graph. Therefore, displacement of the first car... View Article

A stone is thrown in a vertically upward direction with a velocity of 5 m s^-1. If the acceleration of the stone during its motion is 10 m s^-2 in the downward direction, what will be the height attained by the stone and how much time will it take to reach there?

Given that Initial velocity (u) = 5 m/s Terminal velocity (v) = 0 m/s (since the stone will reach a position of rest at the point of... View Article

A racing car has a uniform acceleration of 4 m s^-2. What distance will it cover in 10 s after start?

Given that The car is initially at rest; initial velocity (u) = 0 ms-1 Acceleration (a) = 4 ms-2 Time period (t) = 10 s Find out What... View Article

A trolley, while going down an inclined plane, has an acceleration of 2 cm s ^-2. What will be its velocity 3 s after the start?

Given that Initial velocity (u) = 0 ( as the trolley begins from the rest position) Acceleration (a) = 0.02 ms-2 Time (t) = 3s Find out... View Article

A train is travelling at a speed of 90 km h^-1. Brakes are applied so as to produce a uniform acceleration of –0.5 ms^-2. Find how far the train will go before it is brought to rest.

Given that Initial velocity (u) = 90 km/hour = 25 m.s-1 Terminal velocity (v) = 0 m.s-1 Acceleration (a) = -0.5 m.s-2 Find out How far the... View Article

A bus starting from rest moves with a uniform acceleration of 0.1 ms^-2 for 2 minutes. Find (a) the speed acquired, (b) the distance travelled.

Given The bus starting from rest moves with a uniform acceleration of 0.1 m s-2 for 2 minutes Find out Acceleration and distance travelled... View Article

What is the quantity which is measured by the area occupied below the velocity-time graph?

The area occupied under the velocity-time graph is the distance travelled by the moving body. The area under a velocity-time graph is the... View Article

What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?

When the slope of a speed-time graph is a straight line parallel to the time axis, the object is moving with uniform speed. Since there is... View Article

What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis?

When the slope of the distance-time graph is a straight line parallel to the time axis, the object is at the same position as time passes. That... View Article

When will you say a body is in (i) uniform acceleration? (ii) non-uniform acceleration?

Answer: Acceleration is defined as the rate of change of velocity with respect to time. Acceleration is a vector quantity as it has both... View Article

During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 10⁸m/s.

Given that The signal travels in a straight line, the distance between the spaceship and the ground station is equal to the total distance... View Article

What does the path of an object look like when it is in uniform motion?

The path of an object in uniform motion is a straight line. Uniform Motion:This type of motion is defined as the motion of an object in which the... View Article

Distinguish between speed and velocity.

The velocity of an object can be defined as the rate of change of the object’s position with respect to a frame of reference and time. It might... View Article

A farmer moves along the boundary of a square field of side 10m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

Given that The farmer covers the entire boundary of the square field in 40 seconds Find out The magnitude of displacement of the farmer at... View Article

Find the focal length of a lens of power -2.0 D. What type of lens is this?

The power of the lens is known as the inverse of the focal length of the lens measured in meter(m). Power of lense = 1/ focal length in meter.... View Article

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