Front

To move more quickly

Back

accelerate

Front

Condition that can change in an experiment.

Back

variable

Front

Tool to measure force.

Back

spring scale

Front

Force opposing motion between touching objects.

Back

friction

Front

Force of attraction between objects; attraction between Earth and objects.

Back

gravity

Front

A push or pull causing a change in motion.

Back

force

Front

Make or become smaller in size or amount.

Back

decrease

Front

Unit of force measurement.

Back

Newton

Front

Experimental setup for comparison.

Back

control

Front

Cord or fabric that returns to its original length or shape after being stretched.

Back

elastic