A 1 kg water bottle have 0.15m above your head How much GPE does it have

GPE = 1.47 Joules.

Explanation:

Given the following data;

Mass = 1kg

Height = 0.15m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

Where;

G.P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Substituting into the formula, we have;

GPE = 1*9.8*0.15

GPE = 1.47 Joules.

car a and b are moving in opposite directions

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the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.