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- 1. Multiple Choice
A squid moves through the water by ejecting water out of its body into the surrounding water. When the water is pushed out, the ejected water pushes back and thrusts the squid forward.
First Law of Motion (law of inertia)
Second Law of Motion (law of force and acceleration)
Third Law of Motion (law of motion and reaction)
Fourth Law of Motion (law of balanced forces)
- 2. Multiple Choice
Which example best demonstrates an application of Newton's first law of motion?
A child tries to push sofa across the floor, but it will not move. His sister comes to help him. Pushing together, the children are able to move the sofa.
A child pushes two different sofas across the floor. He finds that the light sofa is easier to push than the heavy sofa.
A child and his sister push on a sofa from opposite sides. They are equally strong, and the sofa does not move in their direction.
A child and his sister push two identical sofas across the floor in a race. His sister is stronger than he, and she wins the race.
- 3. Multiple Choice
A large man applying a force of 5 Newtons to a box pushes the box across a smooth wooden floor. The floor surface changes to a carpet which applies an opposing force of 2 Newtons to the box. What effect does the carpet's frictional forces have on the motion of the box?
The box moves to the left at a faster speed because of the greater net force of 7 Newtons/
The box moves to the left a slower speed because of a lesser bet force of 3 newtons.
The box moves to the right at a slower speed because of a lesser net force of 3 newtons.
The box moves to the right at a slower speed because of a lesser net force of -4 Newtons.
- 4. Multiple Choice
Newton's third law of motion states that for every action, there is an equal and opposite reaction. Which of the following object's motion is an example of Newton's third law of motion?
A person riding a car without seatbelt will move forward when the car comes to a sudden stop.
A motor boat must exert a force of 100 Newtons to accelerate a 50 kg water skier at a rate of 2 m/s2.
A hockey player skating towards her goal will continue to slide towards her goal if she slips and falls.
A rocket forces gas in a downward direction to launch itself into the air.
- 5. Multiple Choice
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction. Which Newton's Law is being used in this example?
Newton's 1st Law (Law of Inertia)
Newton's 2nd Law (Law of Acceleration)
Newton's 3rd Law (Law of Action-Reaction)
Newton's 4th Law (Law of Science)
- 6. Multiple Choice
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass. What which law explains this?
Newton's 1st Law (Law of Inertia)
Newton's 2nd Law (Law of Acceleration)
Newton's 3rd Law (Law of Action-Reaction)
Newton's 4th Law (Law of Science)
- 7. Multiple Choice
Alexis was conducting an experiment for her science class. She wants to know why does a soccer ball accelerate more than a bowling ball when thrown with the same force of 20 Newtons. Using her knowledge about Newton's Laws of Motion, which law should help her find the answer?
Newton's 1st Law (Law of Inertia)
Newton's 2nd Law (Law of Acceleration)
Newton's 3rd Law (Law of Action-Reaction)
Newton's 4th Law (Law of Science)
- 8. Multiple Choice
Damian L. just bought coffee and put it on the seat next to him. As he was driving, a rabbit crossed the road and he immediately pressed on the breaks to avoid hitting the rabbit. The rabbit was not harmed but his coffee spilled on the seat. What law explains why Dame's coffee spilled when he stopped?
Newton's 1st Law (Law of Inertia)
Newton's 2nd Law (Law of Acceleration)
Newton's 3rd Law (Law of Action-Reaction)
Newton's 4th Law (Law of Science)
- 9. Multiple Choice
A crash test dummy is used to test the durability of a new car seatbelt technology developed by Besla electronics. During the first test, the seat belt failed and resulted to the dummy being ejected as seen on the pictures. Which of law of motion explains why the dummy ejected in that fashion?
Newton's 1st Law (Law of Inertia)
Newton's 2nd Law (Law of Acceleration)
Newton's 3rd Law (Law of Action-Reaction)
Newton's 4th Law (Law of Science)
- 10. Multiple Choice
The picture shows an aerialist walking on a tightrope and holding a balancing bar. An action-reaction pair forces exists between which ?
The aerialist's feet and the rope
The rope and the balancing bar
The two ends of the rope
The aerialist's arms and legs
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