Gravity of antimatter. It is a theory that the energy and forces came from a different universe in the multiverse theory. Antimatter, scientists theorize, has a gravitational pull and some scientists believe that was the force that caused the first stars to form during the creation of the universe. Another theory is that it was the forceful push and pull of the Big Bang and the gases and atomic particles from other universes already born formed the first stars. (The multiverse theory has not yet been proven but is highly likely)
Answer:
Option (a)
Explanation:
Impulse is defined as the change in momentum of the body. It is a vector quantity and its SI unit is Kg m/s.
mass of ball, m = 0.4 kg
initial velocity, u = - 30 m/s
Final velocity, v = + 20 m/s
Initial momentum, pi = mass x initial velocity = m u = 0.4 x (- 30) = - 12 kg m/ s
Final momentum, pf = mass x final velocity = mv = 0.4 x 20 = 8 Kg m /s
Change in momentum = final momentum - initial momentum = 8 - (- 12 )
So, impulse = 20 kg m /s right
Option (a) is correct
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When two objects collide there will be a force acting on them both and their individual kinetic energies and momenta may alter. As you know already, energy is always conserved but in a collision some, or all of the kinetic energy may be ... of the same mass and traveling at the same speed but in opposite directions collided ...
The law of conservation of mass states that <u>matter cannot be created or destroyed.</u>
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The law of conservation of mass states that the mass of the reactant must be equal to the mass of the product.
In 18th century law of conservation of mass was given by Levoisier.
It states that mass is neither created nor destroyed.
Example -
- when wood burns the mass of the suit ,ashes and gases equal to the original mass of the charcoal.
- after heating the ice it will convert into water. Mass of the ice does not change after undergoes a physical. Change.
The law of conservation of mass states that <u>matter cannot be created or destroyed.</u>
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To know more about Conservation of mass.
brainly.com/question/14594753
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Weight is the force exerted by the earth on a mass therefore weight = mass * acceleration due to gravity . Weight will different on different surfaces such as the moon ,earth etc . But mass is always the same regardless of the force exerted by the surface
