When a skateboarder makes
a jump, how is the energy
transformed?
a. the chemical energy in from his food is
transformed into mechanical energy.
b. the thermal energy from his food is
transformed into mechanical energy.
c. the mechanical energy from his food is
transformed into chemical energy.

A

Explanation:

Glucose is used which is the chemical energy, then his muscle moves which is the mechanical energy

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15