Which statement is correct about two objects that have gravitational force? They have mass.
They move slowly.
They are round in shape.
They have high temperature.

Which statement best explains why an object weight less on mercury than it does on earth

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Can anybody me with this? ? (picture included.)