The position(x)-time(t) graph of a ball is a straight line inclined at an angle of 30° to the x-axis. The ball is moving with:
The position-time (x-t) graph of an object represents its motion over time. The slope of this graph gives the velocity of the object.
If the graph is a straight line, it means the motion is uniform (constant velocity).
The slope of the line (the angle with the time axis) indicates the rate at which the position of the object is changing with respect to time.
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60 Mins English English20 Questions40 Marks12 Mins English English80 Questions160 Marks60 Mins EnglishWhich law explains colours of stars based on temperature?
The three modes of heat transfer are:
Which of the following is correct about Specific heat capacity of water?
Efficiency of Carnot engine can be increased by:
The best conductor of heat among the following is
A graph of Fahrenheit temperature versus Celsius temperature is a straight line, whose intercept is _____.
A point mass has a velocity v = (1.0 m/s) i + (3.0 m/s) j, at a certain instant. At the same instant, it experiences a force F = - (2.0 N) i + (4.0 N) j + (5.0 N) k. i, j and k are unit vectors along x-, y-, and z- axis, respectively. The power delivered by the force, at that instant is:
The position(x)-time(t) graph of a ball is a straight line inclined at an angle of 30° to the x-axis. The ball is moving with:
Mohan (mass 60 kg) runs up a flight of stairs having a rise of 5 m in 6 s. The average power supplied by him during run up is (take = 10 ):
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