Test: Average Velocity & Average Speed
5 Questions MCQ Test Physics Class 11 | Test: Average Velocity & Average Speed
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Which of the following statements are incorrect?
(i) Average velocity is path length divided by time interval.
(ii) In general, speed is greater than the magnitude of the velocity.
(iii) A particle moving in a given direction with a non-zero velocity can have zero speed.
(iv) The magnitude of average velocity is the average speed.
(i) Average velocity is path length divided by time interval.
(ii) In general, speed is greater than the magnitude of the velocity.
(iii) A particle moving in a given direction with a non-zero velocity can have zero speed.
(iv) The magnitude of average velocity is the average speed.
A particle moving in a given direction with non-zero velocity cannot have zero speed. In general, average speed is not equal to magnitude of average velocity. However it can be so if the motion is along a straight line without change in direction.
A car is moving along a straight line OP as shown in the figure. It moves from O to P in 18 s and returns from P to Q in 6 s. Which of the following statements is not correct regarding the motion of the car?
From O to P and back to Q
From O to P and come back to O
The area under velocity-time graph for a particle in a given interval of time represents
The area under the velocity-time graph represents the displacement over a given time interval.
A cyclist moving on a circular track of radius 40m completes half a revolution in 40s. Its average velocity is
The position of an object moving along x-axis is given by x = a + bt2 , where a = 8.5 m and b = 2.5 m s−2 and t is measured in seconds. The average velocity of the object between t = 2 s and t = 4 s is
6(2.5)m s-1 = 15m s-1
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