Credit:JurgenCC-BY 2.0

Q: A: ### Quick Answer

**Instantaneous speed refers to the speed of an object at a specific point in time.** Most speeds are average speeds, which is calculated by dividing the distance traveled by the time it took to travel it.

The instantaneous speed of an object can only be calculated by dividing the distance covered by an object by the time it took during a very small time span. An accurate approximation can be obtained using a gauge or speedometer.

On a typical road trip that is 50 miles long and takes 1 hour to complete, the average speed of the car would be 50 miles per hour. Since speed usually changes at different points in a trip, the instantaneous speed may have been 55 miles per hour at one point and 45 miles per hour at another.

Learn more about Motion & MechanicsSources:

- Q:
## What is an example of instantaneous speed?

A:Instantaneous speed is an object's rate of motion at a particular time period or moment. Recording the speed of a running cheetah exactly 13 seconds after its sprint began would be an example of instantaneous speed.

Full Answer >Filed Under: - Q:
## What is the difference between speed and acceleration?

A:

Full Answer >**Speed measures how fast an object is moving, whereas acceleration is how much the speed of an object changes during a specified period of time.**If an object is speeding up, it has a positive acceleration, whereas an object slowing down has a negative acceleration.Filed Under: - Q:
## Can an object be accelerating if its speed is zero?

A:

Full Answer >**It is possible for an object to be accelerating if it has a zero speed or zero velocity.**In such a case, the object only has zero speed for an instant.Filed Under: - Q:
## What is the physics equation for speed?

A:

Full Answer >**The speed of an object is equal to the distance it travels divided by the amount of time it takes to travel the distance.**This actually measures the average speed; instantaneous speed is the speed of an object at a given instant (as the time period approaches zero).Filed Under: