1) What does Newton's first law of motion state? a) An object in motion will stay in motion unless acted upon by an external force. b) Force equals mass x acceleration. c) For every action, there is an equal and opposite reaction. 2) Which of the following is an example of Newton's second law of motion? a) A soccer ball rolling down a hill b) A rocket launching into space c) A person pushing a box across the floor 3) What is the formula for force according to Newton's second law? a) Force = mass x acceleration b) Force = mass ÷ acceleration c) Force = mass + acceleration 4) Which of Newton's laws explains why a seatbelt is important in a car? a) Newton's first law b) Newton's second law c) Newton's third law 5) If you push a shopping cart with a force of 20 Newtons, and its mass is 5 kilograms, what is its acceleration? a) 4 m/s^2 b) 25 m/s^2 c) 100 m/s^2 6) What is the unit of force in the International System of Units (SI)? a) Newton (N) b) Kilogram (kg) c) Meter (m) 7) According to Newton's third law, if you push against a wall with a force, the wall pushes back with... a) A greater force b) A smaller force c) An equal force 8) Which of Newton's laws explains why a rocket launches into space? a) Newton's first law b) Newton's second law c) Newton's third law 9) When a car comes to a sudden stop, what law of motion is being demonstrated? a) Newton's first law b) Newton's second law c) Newton's third law 10) Which law of motion explains why you feel a force pushing you back into your seat when a car accelerates? a) Newton's first law b) Newton's second law c) Newton's third law 11) If you apply a force of 10 Newtons to an object with a mass of 2 kilograms, what is its acceleration? a) 0.2 m/s^2 b) 5 m/s^2 c) 20 m/s^2 12) Which of Newton's laws is also known as the law of Inertia? a) Newton's first law b) Newton's second law c) Newton's third law 13) If you drop a feather and a bowling ball from the same height in a vacuum, which will hit the ground first? a) The feather b) The bowling ball c) They will hit the ground at the same time 14) According to Newton's third law, when you jump off a boat onto the dock, the boat will... a) Move away from the dock b) Stay still c) Move towards the dock 15) Which of Newton's laws explains why astronauts experience weightlessness in space? a) Newton's first law b) Newton's second law c) Newton's third law 16) Which of the following is an example of Newton's third law of motion? a) A ball rolling down a hill b) A rocket launching into space c) A person pushing against a wall 17) What is friction? a) A force that pulls objects toward each other b) A force that opposes the motion of objects that are touching c) A force that pushes objects away from each other 18) Which of the following surfaces would create the most friction when rubbed together? a) Smooth metal on smooth metal b) Rough sandpaper on smooth wood c) Smooth glass on smooth glass 19) How does friction affect the motion of a moving object? a) Friction increases the speed of the object b) Friction decreases the speed of the object c) Friction has no effect on the speed of the object 20) Which of the following actions would increase friction between two surfaces? a) Adding oil between the surfaces b) Making the surfaces smoother c) Pressing the surfaces together with more force 21) How many types of friction are there? a) 5 b) 4 c) 3 d) 2 22) Select an correct example of fluid friction. a) A soccer player starting to run from a still position b) a ball traveling down a hill c) a child traveling down a slide d) a bird flying thru the air 23) Select an correct example of sliding friction. a) A soccer player starting to run from a still position b) a ball traveling down a hill c) a child traveling down a slide d) a bird flying thru the air 24) Select an correct example of rolling friction. a) A soccer player starting to run from a still position b) a ball traveling down a hill c) a child traveling down a slide d) a bird flying thru the air 25) Select an correct example of static friction. a) A soccer player starting to run from a still position b) a ball traveling down a hill c) a child traveling down a slide d) a bird flying thru the air

Newton's Laws Checkpoint Review #1!

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