Monday, October 14, 2013
Driving to school every morning, I mean driving in general made me think of physics and everything Iâ™ve learned in class so far. Starting from where my car is parked (position), to displacement, velocity and also acceleration. John Jay is 19.2 miles away from my house. Every day I make two trips, one from my house to school and then another one from school to my house, therefore thatâ™s 38.4 miles traveled all together. But whatâ™s the actual displacement? The displacement is 0 miles because I always end up where I start and I always take the same way home. Speaking about velocity, letâ™s say Iâ™m in my car driving down the road at a nice steady 60 miles per hour. My velocity = 60 mph. My acceleration = 0 (since acceleration = change in speed / change in time and my speed doesn't change). Thereâ™s a red light in front of me so I stopped at the red light. My velocity = 0mph. My acceleration = 0 since my velocity equals a constant zero. The light turns green. I step on the gas and my car speeds up from 0 mph to 60 mph in 5 seconds. My velocity changes from 0 to 60 mph so my acceleration is 60mph-0mph over 5 seconds which is 12 mph per second.
Evgenija
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