Impulse, denoted as J, is defined by the change in momentum. Since we have our initial and our final, we can solve for the change in momentum.
Answer:
Centripetal acceleration is defined as the property of the motion of an object, traversing a circular path. Any object that is moving in a circle and has an acceleration vector pointed towards the center of that circle is known as Centripetal acceleration. ... Centripetal means towards the center.
Answer:
Mollusks
Explanation:
The shear concentration of fossilized mollusks can be explained by the ability of their shells which are comprised primarily of calcium, allowing the hard shells remain and become fossilized long after the animal has decomposed.
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We have to assume that the truck was not moving
before he started pushing it.
After he did 12 J of work pushing it, the truck had
12 J of kinetic energy.
Kinetic energy = (1/2) (mass) (speed²)
12 J = (1/2) (3 kg) (speed²)
Divide each side by 1.5 kg : 12J / 1.5 kg = speed²
1 J = 1 newton-meter (12 kg-m²/sec²) / (1.5 kg) = speed²
= 1 kg-m² / sec²
(12 / 1.5) ( m²/sec²) = speed²
Speed = √(8 m²/s²)
Speed = 2.83 m/s .
We can't say anything about velocity, because we don't know
anything about the direction in which the truck is moving.
