Respuesta :
Taking into account the definition of speed ans velocity, the speed and velocity of the car are 10 km/h and 10 km/h due east respectively and the speed and velocity of the truck are 20 km/h and 20 km/h due west respectively.
Definition of speed
Speed is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. That is, the speed is associated with the change of position of an object in space within a certain amount of time.
The speed can be calculated using the expression:
speed= distance traveled÷ time
Definition of velocity
Velocity is a physical magnitude that relates the displacement of an object, the time it takes to make this change in position and direction. So it is considered a vector magnitude.
The velocity can be calculated using the expression:
velocity= distance traveled÷ time
Velocity has units of distance/time and includes direction of travel.
Speed and velocity in this case
In this case, you know:
- The car covers a distance of 20 km due east in two hours.
- Truck covers 60 km in 3 hours due west.
The speed and velocity of the car can be calculated:
- speed= 20 km÷2 hours= 10 km/h
- velocity= 20 km÷2 hours= 10 km/h due east.
The speed and velocity of the truck is calculated as:
- speed= 60 km÷3 hours= 20 km/h
- velocity= 60 km÷3 hours= 20 km/h due west.
In summary, the speed and velocity of the car are 10 km/h and 10 km/h due east respectively and the speed and velocity of the truck are 20 km/h and 20 km/h due west respectively.
Learn more about speed and velocity:
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