What kind of acceleration occurs when an object speeds up?

A) positive

B) negative

C) neutral

D) zero

Which single force acts on an object in free fall? A. Air resistance B. gravity C. Friction D. fluid forces

If a 0.20 kg object fell 7.0 Meters before it hitting the ground, what was it's change in Potential Energy during the fall?

What happens to the speed of water waves as it enters a shallow medium.

Which of the following is a change of state of a substance? A. Water placed in the freezer forms ice cubes. B. A piece of metal becomes warm in sunlight. C. A large piece of paper is cut into eight strips. D.

What distinguishes an independent variable from the dependent variable

Do you think Pluto should be considered a planet? Why or why not?

An object starts from rest at time t = 0.00 s and moves in the + x direction with constant acceleration. The object travels 14.0 m from time t = 1.00 s to time t = 2.00 s. What is the acceleration of the object? a) 5.20 m/s^2 b) 10.4 m/s^2 c) 8.

A box is dragged without acceleration in a straight-line path across a level surface by a force of 13 N. What is the frictional force between the box and the surface?

What is a wormhole, and how is it formed?

Most cells cannot harness heat to perform work because