Question

spiderman is using his webs to stop a train.
what forces are acting on the train?
force of gravity
down and force
of tracks up.
pull from spidermans
web in the opposite
direction of motion.
force of friction/air
resistance in the
opposite direction of
motion.
all statements
are correct.

Explanation:

Step1: Analyze Force of Gravity

Force of gravity acts downward. When Spiderman uses webs to stop a train, gravity still acts on the train.

Step2: Analyze Pull from Spiderman's web

The web pulls the train in the opposite direction of its motion. This is a force applied by Spiderman (through the web) to counter - act the train's motion.

Step3: Analyze Force of friction/air resistance

Air resistance (a form of friction) acts in the opposite direction of the train's motion.

Answer:

All statements are correct.