A child makes a ramp to push his toy truck up to his sandbox. If he uses 16 N of force to push the 64 N truck up the ramp, what is the mechanical advantage of his ramp? If your
answer is a decimal, round to the nearest whole number.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.

Farmer a has a deep well and needs a lot of water for her animals and crops. her neighbor, farmer b, has a shallower well. he needs less water than farmer a because his farm is smaller. in years of drought, sometimes farmer b can't get any water from his wells. what can farmer b do to decrease the likelihood of his well running dry?