The average velocity of a bus is 15 m/s. if it starts off going 15m north and then 20m south, how long will the bus ride take?

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

grav forces affect all objects magnetic forces affect magnetic objects and electric currents