quiz 4 physical science

A gun with a muzzle velocity of 100 m/s is fired horizontally from a tower. Neglecting air resistance, how far downrange will the bullet be 1 s later?

100m

If the masses of two planets triples and the distance between reduces by half, the force between them would be

36 times as much

a stone is thrown horizontally from the top of a cliff. one second after leaving your hand it drops a vertical distance of

5m

in the vacuum of outer space, there is no

atmospheric pressure

A hunter fires a bullet from a horizontally-held rifle while simultaneously dropping another bullet from the side of the rifle. Which bullet hits the ground first?

both hit at the same time

When the distance between two stars doubles, the force between them

decreases by one-quarter

The amount of gravitational force that acts on a space vehicle that orbits Earth is

nearly as much as the vehicle's weight on Earth's surface

an earth satellite is simply a projectile freely falling around the earth

true

Consider two planets in space that gravitationally attract each other. If the mass of one planet is doubled, and the distance between them doesn't change, then the force between them is

twice as much

If the Earth had twice its present radius and twice its present mass, what would happen to your weight?

weight would be half