hellium gas is added to a balloon already partially filled with helium gas.why does the balloon inflate?
A bicyclist going south at 5 m/s passes a bicyclist going north at 5 m/s, they have the same?
Gravitational force of attraction F exists between two point masses A and B when a fixed distance separates them. After mass A is doubled and mass B is quartered, the gravitational attraction between the two masses is
what is the impact speed when a car moving at 200 km/h bumps into the rear of another ar traveling in the same direction at 84km/h? answer in km/h Wouldn't the be the relative speed of each (200-84) as compared to the other? Thats what I initially tried too, but when I tri...