Question

We get on a train leaving from station A, which we take as our reference. What will our position be after 1 hour if the train moves at a uniform speed of 140km/h?

Answer 1

Respuesta: it depends

Explicación: how many km is your destination from station a?

if the destination is not clear, it could be

You are 140km more near to the destination.

Answer 2

Calculate the weight of a body of 50 kg mass that is in the super-

ficie of our planet.

On the Earth's surface, the acceleration due to gravity has an average value

g = 9.8 m / s2; therefore, the weight of a body of 50 kg of mass that is

found on the surface of the planet is:

On the Earth's surface, the body will weigh 490 N.

kg, s