This is very basic physics theory.
Energy is never created nor destroyed.
This can be counter intuitive if you are studying nuclear physics since Einstein told us E=mc^2. Energy coming from just mass? This is the reason why the (really small) percentage of the universe we know, which isn't dark matter or dark energy, is generally called energy and matter.
<span>From his observations of cannon drilling, Count Rumford concluded that heat could NOT be a form of C. matter.
Although all matter contains heat energy, heat itself is not a form of matter, but just one of its integral parts.
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Their final velocity is 0.48 m/s.
We can use conservation of momentum to calculate the magnitude of the final velocity.
Momentum before collision is equal to the momentum after collision
m1v1+m2v2=(m1+m2)v
here, v is final velocity , assuming right side velocity as positive, and left side velocity as negative.
14*(-1.1)+18*(0)=(14+18)v
v=-0.48 m/s
Here, negative sign indicates that they both will move in left direction.
Acceleration = speed/ time
a = Δv/Δ t
as Δv = v₂ - v₁ / t
a = 50m /s - 0 m/s / 60m
= 50m/s / 60m
= 0.834s⁻¹
Blood borne pathogens can be transmitted between persons through bodily fluid example: needle sticks, human bites, cuts, abrasions
hope this helps!
