Me with this physics question! a man stands by a train track to watch the train car go by. inside, a man walks through the train car eating a hot dog (the hot dog is moving 1 m/s towards his mouth). determine the hot dog's velocity with respect to the man standing still outside of the train car. a) -11 m/s b) -9 m/s c) 9 m/s d) 11 m/s

D) 11 m/s

Explanation:

We have to calculate the velocity of the hot dog with respect to the observer still outside the train. This velocity will be given by:

where

is the velocity of the train (towards right)

is the velocity of the man (towards right)

is the velocity of the hot-dog (towards left, so we put a negative sign)

By replacing the numbers into the equation, we find

and the positive sign means the velocity is toward right.

D) 11 m/s

Explanation:

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.