collisions

"The key functions of a refrigerator are to keep food cold and prevent spoilage. "

"When a body collides with another, then momentum is conserved."

"The amount of time it takes to finish my homework is a variable; sometimes it takes me an hour, other times it takes much longer. "

"The family owns several, a small plot of land behind their house. "

"The lack of sleep resulted in a poor performance on the math test. "

"The success of our bake sale depends on several variables, such as the weather and the number of people who attend. "

"The school bus is a highway for getting students to school safely. "

"Attendance at the meeting is required."

"The seamstress used a sturdy between to create a precise, even stitch on the thick upholstery fabric. "

"My mother's instance that I finish my homework before dinner was quite strong. "

"He is a student of life."

"Letters are the elements of written language."