Her displacement would be -3 blocks
displacement = final position - initial position
The answer is false. The speed of the astronaut cancels out the force of gravity, causing a 'stationary freefall'. While under these effects, it is not required for an astronaut to 'strengthen' his body.
The smallest one is the least powerful one. And the medium size one is the medium powerful one. And the largest one is the most powerful one of them all
A strong force 's responsible for producing a stable nucleus by opposing the electrostatic force of repulsion between protons.