Which mass would have the greatest acceleration if the same unbalanced force was applied to each?

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion