OPENING QUESTIONS: It may surprise you to know that the top selling vehicle in the United States is the Ford 150 truck (it sold over 750,000 units in 2023-- and that sure surprised me). The top selling car was the Toyota Camry which sold substantially few units (just over 290,000) that same year.
Let's say that you are drive a Ford 150 truck with a weight of 4750 lbs at a speed of 60.00 mph down I-5 when a flaming meteor impacts the roadway 59.5 meters ahead of you.
You stomp on the brakes (thankful they are anti-lock) which apply 14,883 N of force to the wheels.
How much work does will it take to bring you to a stop in time?
What forces contributed to that work?
Which force was greatest?
LEARNING OBJECTIVES:
1) I will be able to calculate intermediate/advanced energy problems during today's class.
WORDS O' THE DAY:
- Work (Force through displacement, usually measured in Nm)
- Energy (measured in Joules)
- Power (measured in Joules/sec = Watts)
FORMULAE OBJECTUS:
Work = ∆E = Fd = Fdcosθ
Kinetic Energy = Energy of Motion = KE = 1/2mv2
Gravitational Potential Energy = Ug = mgh
Power = P = energy/time
WORK O' THE DAY:
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Begin work on the following Physics Classroom problems 16, 17, 22, 24, 25, 28, 31 & 32
And my worked solutions will be HERE