A baseball going at the same speed as a tennis ball has more _________ because it has more mass.
momentum
The length between two places is called _______.
distance
Dividing the output force by the effort force equals the ___________ of a simple machine.
mechanical advantage
Energy of motion is called ______.
kinetic energy
An object’s speed and its direction of motion indicate its ___________.
velocity
In order to push or pull an object, a(n) ___________ must be applied to the object.
force
An object in space that has moved beyond the pull of gravity experiences ___________.
weightlessness
The ratio of the work done by a machine to the work put into the machine is known as its ____________.
efficiency
Energy that is stored is called ____________.
potential energy
An object’s __________ is its location compared to other things.
position
What is a strong push in the direction opposite an object’s weight?
thrust
What is a simple machine made of an inclined plane wrapped around a central bar?
screw
What is the metric unit used for measuring force?
Newton
What is a push or pull that causes a change in motion of an object?
Unbalanced force
What is the force that opposes the sliding of an object over a surface?
Sliding Friction
What do we call a combination of devices that make it easier to do work?
Compound machine
