I need help with this physics question on instanteneous velocity? pls help 5 points asap?
Can the instantaneous velocity of an object at an instant of time ever be greater in magnitude than the average velocity over a time interval containing the instant? Can it be less?
- Anonymous1 decade agoFavorite Answer
if the velocity is increasing from 0 to 20 m/s in a time t and covering distance s then when it is 20m/s which is its instantaneous velocity will be greater than the average velocity
if the velocity decreases from 20 to 0 m/s then when it is zero which is the velocity at that instant t which is zero will be obviously less than the average velocity because it did have velocities higher
in general during acceleration instantaneous velocity at a later time t > average velocity from time o to t
during deceleration then instantaneous velocityat a later time t < average velocity from time 0 to t
its common sense even if the acceration or deceleration is not constant or uniform but it is always either always +ve or always negative and assuming direction of velocity doesnt change either
all the best
- 1 decade ago
The instantaneous velocity of an object can differ from the average velocity of an object over a period as long as the object undergoes some form of acceleration.
example: a car accelerating from 40 - 50 mph over 10 seconds will have averaged 45 mph (assuming constant acceleration) but it will have only actually been doing 45 mph for an instant during the acceleration.Source(s): MPhys Student
- Anonymous1 decade ago
Yes and yes.