Increasing which factor will cause the gravitational force between two objects to decrease? A. weights of the objects
B. distance between the objects
C. acceleration of the objects
D. masses of the objects

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?