A225 kg red bumper car is moving at 3.0 m/s. it hits a stationary 180kg blue bumper car. the red and blue bumped cars combine and hit a stationary green bumper car of mass 150kg. the red, blue and green bumper cars all combine. what is the final velocity of the combined bumper cars?

1.22 m/s

Explanation:

By using the conservation of momentum of red and blue car

225 x 3 + 180 x 0 = (225 + 180) v

Where, v be the speed of blue and red car combined together.

675 = 405 v

v = 1.667 m /s

now the conservation of momentum for blue red combination and green car

(225 + 180) x 1.667 = (225 + 180 + 150) v'

Where v' is the speed of combined cars

675 = 555 v'

v' = 1.22 m/s

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.