# Quiz on Newton's Laws

Question 1: If you pull on a 20-kg wagon with a constant force of 80 N.
What is the wagon's acceleration?

• 0.0 m/s2
• 2.0 m/s2
• 4.0 m/s2
• 5.0 m/s2
Question 2: If a car runs out of fuel while running, and the engine stops.
The car doesn't stop suddenly because of ........

• speed.
• inertia.
• mass.
• acceleration.
Question 3: Both ends of a piece of rope are pulled by two people in a tug-of-war contest.
If each pulls with a 500-N force, what would be the tension in the rope?

• 0 N
• hard to find
• 500 N
• 250 N
Question 4: Assume that an object's mass get reduced while a constant force acts on it.
In this case, the acceleration .........

• increases.
• decreases.
• stays the same.
• becomes zero.
Question 5: Flying motion of birds is an example of ............

• newton's first law.
• newton's second law.
• newton's third law.
• conservation of energy.
Question 6: Action and reaction pair of forces...............

• cancel each other.
• always act on different bodies.
• are both zero.
• represent a case of conservation of energy.
Question 7: An object in motion tends to remain in motion...............

• because the force is zero.
• is not possible.
• due to energy conservation law.
• without the need of a force.
Question 8: An object in motion tends to remain in motion is an example of ..............

• newton's first law.
• newton's second law.
• newton's third law.
• conservation of energy.
Question 9: Newton's second law focuses on ..............

• speed.
• inertia.
• mass.
• acceleration.
Question 10: Propulsion of fish is an example of..............

• newton's first law.
• newton's second law.
• newton's third law.
• conservation of energy.
Question 11: If you are attracted toward Earth by a 800-N gravitational force.
Then Earth is attracted towards you with a force of..........

• 0 N
• hard to find
• 400 N
• 800 N
Question 12: Assume a given net force drives an object along a straight-line path.
If the mass were doubled, its acceleration would............

• be half.
• be double.
• be zero.
• stay the same
Question 13: Assumne a boat exerts a force of 4,000 N on a jetski that accelerates at 2 m/s2.
What is the mass of the jetski?

• 0 kg.
• 1,000 kg.
• 2,000 kg.
• 3,000 kg.