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Airplane with Tailwind and Headwind

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Q: An airplane flew 3 hours with a 40 mph head wind. The return trip with a tail wind of the same speed took 2 hours. Find the speed of the plane in still air.

A: When you have a headwind, you have to subtract the wind’s speed from the . . . → Read More: Airplane with Tailwind and Headwind

Kinematics Equations

Q: What are the kinematics equations?

Where = displacement = initial velocity = final velocity = acceleration = time

These are very useful, and you will use them many times before you are finished Physics 11. It would definitely help to memorize . . . → Read More: Kinematics Equations

Vertical Motion of a Rocket

Q: A rocket moves upward, starting from rest with an acceleration of 27.2 m/s2 for 3.49 s. It runs out of fuel at the end of the 3.49 s, but does not stop. How high does it rise above the ground?

A: Okay the rocket’s moving up with an acceleration of +27.2m/s^2 for a . . . → Read More: Vertical Motion of a Rocket

Rate problem, two cars leave at the same time

Graph and then solve these equations by finding their point of intersection.

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Q: Two cars leave at the same time. One car drives North at a rate of 65 m/hr and the other car drives south at a rate of 55 m/hr. In how many hours will the cars be . . . → Read More: Rate problem, two cars leave at the same time

Scooter and Bicycle, when will they meet?

Q: At 8:00am Dave leaves his home on his scooter, traveling east at 18 mph. At the same time and 80 mile away, Cathy leaves her home on her bicycle, traveling west toward Dave at 14 mph. At what time will they meet?

A: You know that D=VT, where D=distance, V=velocity (speed) and T . . . → Read More: Scooter and Bicycle, when will they meet?