If a 5 mile stretch of a bus journey lasts 15 minutes, then the average speed over this stretch was 20mph. But undoubtedly the bus achieved greater speeds than this, and it also spent time sitting still in queues. So the simple answer to the question is 'yes'. Less trivially and more interestingly: unless velocity is actually constant, then an object's average velocity over a finite time interval - and hence any empirical measurement of its speed - must (nearly always) differ from the instantaneous velocity. As the time period grow closer to zero, the measured velocity will converge on the instantaneous figure, but will never reach it.
Of course. When you're sailing along in the car on the highway with the
"cruise control" on, and the ride is smooth as silk and the speedometer is
pointing at ' 60 ' and never moving, your average and instantaneous speed
are equal, until you do something to change your speed.
And if the road is straight and you keep moving in a straight line, then the
same statement is true of your velocity, as well as your speed.
No it does not. If the velocity is 10 m/s for 10 secs and 0 for another 10 secs, then the average is 5 m/s which is non-zero over the 20 second period. But the instantaneous velocity is zero for the period from 10 to 20 seconds.
Of course. If you drive on a long-distance trip for 10 hours each day and spend
the remaining 14 hours in a motel, then the instantaneous 70 or 75 mph that
you frequently hit while on the interstate during the day is most definitely greater
than your average speed for the trip.
No. Its velocity, average velocity and instantanous velocity will all be the same at any (or every) time an investigator makes an observation.
Yes, if the instant in question is near the end of the objects travel, but no if it is at the very begining, unless the object's velocity is somehow increasing while it is in movement.
Yes. Velocity is speed and direction so it can change velocity by changing direction.
Average velocity is the average of the velocty of entire motion where as instantaneous velocity is the velocity at an instant, it may be a function of time or displacement.
No. If it its moving at constant velocity, its instantaneous velocity would be the same as its constant velocity.
Velocity indicates direction in addition to speed.
The term "velocity", as used in physics, DOES have an associated direction. Most derived terms, such as "average velocity", also do.
No. Average velocity is still a velocity.Distance is a product of (a velocity or speed) times (a length of time).
Acceleration is the rate of change of velocity.
The instantaneous velocity is the limit of the average velocity, as the time interval tends to zero. If you are not familiar with limits, basically you make the time interval very small and calculate the average velocity.
Acceleration is the rate at which velocity is changing.
Acceleration is the rate of change of velocity.
Generally it is a Yes. Instantaneous velocity is the exact velocity at a particular time in the course of the movement. However, average velocity is the average of all the instantaneous velocity over a period of time. It is also known as speed in everyday life. As a result, the movement of an object over a time period under varying velocity denotes a varying instantaneous velocity which could be different from the average velocity. It is however, possible that the instantaneous velocity equates to the average velocity at a certain point over the duration of movement. For example, a ball is traveling at instantaneous velocity of 99m/s at t=1s , 100m/s at t=2s and 101m/s at t=3s. the average velocity over the 3s period is hence 100m/s which coincides with the instantaneous speed at t=2s.
Velocity indicates direction in addition to speed.
For the instantaneous value of average velocity, average speed and average velocity are equal.
Velocity is speed and its direction. Average velocity is average speed and its direction.
Always.
Average velocity is def.ined as the ratio of total displacement to total time taken.
The term "velocity", as used in physics, DOES have an associated direction. Most derived terms, such as "average velocity", also do.
velocity is a vector and speed is scalar. Velocity has magnitude and directions, with magnitude being speed. The magnitude of average velocity and average speed is the same.
The speed of something in a given direction.
The average velocity over an time interval is the average of the instantaneous velocities for all instants over that period. Conversely, as the time interval is reduced, the average velocity comes closer and closer to the instantaneous velocity.