One weekend before the start of school, I took my little brother and sister shopping at Ala Moana. We took a few pictures in the car on the way there, just for this blog :P Newton’s first law of motion is the law of inertia and it states that any object will remain stationary or continue to move in a straight line unless acted upon by an external force. A car related example is when you are traveling in a moving car, you are moving in the same direction and with the same speed as the car. If the car suddenly stops, you continue moving – through the windshield if you choose not to wear a seatbelt. I promise though, as a responsible big sister, everyone in my car used a seat belt. Inertia also explains who you lean in the opposite direction when the car turns around a steep curve because your body continues to move straight during the turn.
Newton’s second law of motion states that acceleration is determined by the net force acting upon an object, and the mass of the object. By this law we can conclude that if the net force is higher, acceleration increases but if mass is higher, acceleration decreases. Another car related example is that no matter how hard my brother attempted to make the car roll forward when we stopped at a signal by rocking back and forth, the car would not budge because the car’s mass was so much greater than the force my brother was creating.
Finally, Newton’s third law of motion, the action reaction law, states: for every action in one direction there is an equal and opposite reaction in the opposite direction, even if the object in question does not move. My final car example, a somewhat lame one I might add, is that as we sat in the car, we provided a force on the seats action down towards the road. At the same time, the seats provided an equal an opposite upward force and my siblings and I.
This concludes my application of Newton’s laws of motion to my little sibling outing. Please enjoy the following photos of us being incredibly silly :)
