Advertisements
Advertisements
प्रश्न
A body goes from P to Q with a uniform speed of u and immediately returns back to P at a uniform speed of v. what is the average velocity for the whole journey?
उत्तर
As body goes from P to Q and then return back to P so the displacement of the body would be zero and hence average velocity would also be zero.
APPEARS IN
संबंधित प्रश्न
Observe the figure and answer the questions.
Sachin and Sameer started on a motorbike from place A, took the turn at B, did a task at C, travelled by the route CD to D and then went on to E. Altogether, they took one hour for this journey.
Find out the actual distance traversed by them and the displacement from A to E. From this, deduce their speed.
What was their velocity from A to E in the direction AE?
Can this velocity be called average velocity?
A circular cycle track has a circumstance of 314 m with AB as one of its diameter. A cyclist travels from A to B along the circular path with a velocity of constant magnitude 15. 7 m/ s. Find :
(a) The distance moved by the cyclist.
(b) The displacement of the cyclist if AB represents north-south direction .
(c) The average velocity of the cyclist.
Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.
How long is the body travelling with a uniform velocity?
Assertion: The Speedometer of a car or a motor-cycle measures its average speed.
Reason: Average velocity is equal to total displacement divided by total time taken.
A train travels from A to station B with a velocity of 100 km/h and returns from station B to station A with a velocity of 80 km/h. Its average velocity during the whole journey is ______ and its average speed is ______.
The equation v = u + at gives information as ______.
A body moves with an initial velocity of 5ms-1 and accelerates at 2ms -2. Its velocity after 10s is ______.
The initial velocity of a freely falling object is zero as it is released from rest.
Define velocity.
Distinguish between speed and velocity.
