colliding

"The conflict between the government and the rebels began three years ago."

"to conserve fruits with sugar"

"The bike's momentum carried him down the hill, making it hard to stop. "

"My sister is very helpful, especially when it comes to organizing things. "

"The violent assaulted the student in the school hallway. "

"Everyone in the class needs to bring their textbook to the first lecture. "

"The path from the school to my house goes directly through the park. "

"a horse that startles easily"

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

"The minor collision in the school parking lot caused a small dent in the car's bumper. "

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

"the incompatibles of iron"