It is the distance travelled in a given direction divided by the time taken to cover that distance.
25/0.75 = 331/3 km per hourThat's the truck's average speed.If it spends the entire 45 minutes heading west, thenits average velocity is 331/3 km/hr west.
That would depend on their velocity (speed with direction), since the formula for momentum is momentum=Mass*Velocity. If they are moving at the same Velocity, the heavier of the two would have greater momentum.
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.
Average Velocity is displacement over total time.
Velocity is speed and direction. Truck speed is 80 km/hr. Truck velocity is 80 km/hr going east. Its velocity is also -80 km/h going west, and 0 km/h going north or south.