Weight would not exist without gravity.
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Gravity exists regardless of weight, as it is a force of attraction between objects with mass. Weight, on the other hand, is the force with which an object is pulled by gravity, and it depends on the mass of the object and the strength of the gravitational field it is in. So, gravity would still exist even if weight did not.
Weight is a force exerted by gravity on an object due to its mass. Without gravity, weight would not exist. However, weight does not require support from another force to exist; it is an inherent property of an object in a gravitational field.
The weight of a 870 kg car in the presence of gravity would be the mass multiplied by the acceleration due to gravity. On Earth, with a gravity of approximately 9.81 m/s^2, the weight of the car would be 870 kg * 9.81 m/s^2 = 8538.7 N.
If gravity didn't exist, objects wouldn't be pulled towards each other, so everything in the universe would just float around in space. Planets wouldn't orbit around stars, and on Earth, we wouldn't be held down to the ground. Life as we know it would be completely different.
Without gravity, everything on Earth would float off into space. There would be no atmosphere or oceans, and all living things would have a hard time surviving without the necessary conditions for life. The absence of gravity would also disrupt the orbits of celestial bodies, leading to chaos in the solar system.
Without gravity, objects and beings would float in a straight line. Planets and stars would not form, and life as we know it would not exist. Gravity is crucial for the structure of the universe and for maintaining the orbits of celestial bodies.