Question

5. A car is traveling at 100 km/hr. How many hours will it take to cover a displacement of 750 km?

Answer 1

Wouldn’t it be 7 and 1/2 hours (7.5)? because 750/100=7 1/2 or 7.5. that is one way to explain but i’m happy to go further

Answer 2

It will take 1 hour for a car to cover a displacement of 750 km at a constant speed of 100 km / hr.

Step-by-step explanation:

Velocity ​​is associated with the change of position of a body over time. In other words, speed expresses the relationship between the space traveled by an object, the time taken for it and its direction.

That is, speed implies the change of position of an object in space within a certain amount of time (that is, speed), added to the direction in which said movement occurs.

Then, 100 km / hr is the speed of the car and indicates that every hour the car travels 100 kilometres.

Then it is possible to apply a rule of three to calculate the time it takes for the car to travel 750 km. The three employee rule is: if 100 km are traveled in 1 hour, 750 km in how long is it traveled?

`time=(750 km*1hour)/(100 km)`

time=7.5 hour

It will take 1 hour for a car to cover a displacement of 750 km at a constant speed of 100 km / hr.