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.
Since momentum equals mass times velocity, if the mass of the truck times its velocity is greater than the mass of the bus times the bus' velocity then the momentum of the truck will be greater than the momentum of the bus.
Always.
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 momentum of a truck at rest is zero because momentum is the product of an object's mass and velocity. Since the truck is not moving, its velocity is zero, resulting in zero momentum.
The speed of something in a given direction.
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.
To calculate the mass of the truck, you need both the kinetic energy (KE) and the velocity. The formula to use is KE = 0.5 * mass * velocity^2. Rearranging this formula, we get mass = 2 * KE / velocity^2. Plugging in the values, the mass of the truck would be 850 kg.
Average velocity can be calculated by dividing the displacement (change in position) by the time interval. The formula for average velocity is average velocity = (final position - initial position) / time interval.