If you stand next to a wall on a frictionless skateboard and push the wall with a force of 40n, how hard does the wall push on you? if your mass is 80 kg, show that your acceleration is 0.5m/s2.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

The softest and hardest minerals are: softest hardest

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.