At what time t does the direction of motion of the particle change from right to left?
Thus the particle changes directions exactly once at t=3 seconds. The acceleration is the first derivative of the velocity. Hence, to get the velocity from the acceleration requires integration in time.
Is it possible to go a negative speed?
Speed can NEVER be negative; it is always going to be positive. Your speedometer on a car reads distance; even if you are traveling in reverse, the speed is still positive. Speed is the distance covered per unit of time. Velocity is the rate that position changes (or displacement).
Can the average velocity be zero even if average speed is not zero explain it?
Average speed is the ratio of total distance by TOTAL time taken. As average velocity depends on displacement and displacement can be zero if the object returns to initial position . Whereas displacement is zero as source and destination is same. Hence A body can have zero average velocity but not zero average speed.
Can a body have zero average velocity justify?
A body can have zero average velocity but not zero average speed because velocity is displacement / time and speed is distance / time. An object can have zero displacement but not zero distance . Therefore abody can have zero average velocity but not zero average speed.
Can a body have zero average velocity Why?
Velocity has both magnitude and direction while speed only has magnitude. Hence average velocity can be zero if a body travels to point ‘A’ and back to origin, displacement is 0 so average velocity is also 0. However if body travels same distance to and fro the distance has some value “k”.
Can a body have zero displacement and non zero average velocity?
Yes, one can have zero displacement and a nonzero average velocity as well as zero displacement and nonzero velocity.
When can displacement be equal to zero?
Answer: When the final position and initial position of the object is same then displacement is said to be zero for example an object/body moving in a circular motion when reaches the starting point after completing one complete cirecle is said to have zero displacement.
What is a non-zero displacement?
An object may record a non-zero displacement while maintaining a position of zero. That’s a contradiction of terms because displacement means the object is in a different position. So if it’s maintaining a certain position you can’t have a change of position.
Which is longer distance or displacement?
People sometimes think that distance and displacement are just different names for the same quantity. However, distance and displacement are different concepts. If an object changes direction in its journey, the total distance traveled will be greater than the displacement between those two points.