# Glencoe Science Level Green

## Chapter 23: Newton’s Laws of Motion

### Section 4 Self-Check Quiz-Eng.

 1 Newton's third law of motion states that __________. Need a Hint? A) an object will remain at rest or keep moving in a straight line with constant speed unless a force acts on it B) acceleration is calculated by dividing the force exerted on an object by the mass of the object, and that when a force acts on an object, its acceleration is in the same direction as the force C) when a force is applied on an object, there is an equal force applied by the object in the opposite direction D) the force on an object can be found by dividing its mass by its acceleration 2 You are moving a dresser that has a mass of 36 kg. Its acceleration is 0.5 m/s2. What is the force being applied? Need a Hint? A) 72 N B) 18 N C) 35.5 N D) 1.8 N 3 A 75-kg person pushes a 12-kg person in a swing with a force of 3 N. What is the acceleration of the person doing the pushing? Need a Hint? A) 0.25 m/s2 B) 0.04 m/s2 C) 25 m/s2 D) 0.4 m/s2