Name 2 things that net force acts upon.

-- anything that falls from a tree

-- a car right after the light turns green

-- a baseball while it's touching the bat

-- a baseball right after it leaves the bat

-- a golf ball while it's touching the driver

-- an airplane during its take off run

-- the little ball in a spinning roulette wheel

-- a drop of water after it leaks from the faucet

-- you, turning a corner on your bike

-- a basketball, from the moment of the shot until it hits the floor

-- a bullet, from the moment of the shot until it hits something

-- a bullet that you accidentally dropped from your hand, until it hits the ground

-- a rock, from the moment you throw it until it hits the ground

-- anything sitting or standing on the Earth's surface and rotating with the planet

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)