A boat initially moving at 10 m/s accelerates at 2 m/s² for 10 s. What is the velocity of the boat after 10 seconds?

dopamine..

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metals only

metalloids only

nonmetals only

metal and metalloids

metalloids and nonmetals

answer: the potential energy decreases from 379 j to 243 j

explanation:

for the law of conservation of energy, the total energy in a system must be conserved. the total energy of the system is given by the sum of kinetic (k) and potential (u) energy:

e = k + u

the total energy is e=675 j, and this does not change.

initially, the kinetic energy is k=296 j, so the potential energy is

at the end, the kinetic energy is k=432 j, so the potential energy is

so, we see that the potential energy has decreased from 379 j to 243 j.