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Q1. An airplane P is heading N 80o W at 240 m/s relative to the air. The wind blows from N 10o E with the speed of 41 m/s relative to the ground. Find the direction and magnitude of the velocity of airplane P relative to the ground.
In the meantime, the velocity of airplane Q relative to the air is 250 m/s in the direction of N 20o W. What is the speed of airplane Q relative to the airplane P?
Q2. A car starts from rest and moves along straight line with an acceleration of a = (3s-1/3) m/s2, where s is in meters. Find out the car's velocity and position when t = 6s.
A board is 6 meters long. The center of mass is in the 2 meters from the left end. The board has a weight of 320 Newton's. How much force in Newtons is necessary to lift the right end while the other end stays on the ground.
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
Will the car hit the barricade
Write down the expression that shows the pressure
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
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What is magnitude of the speed of the boat
While a roofer is working on a roof that slants at 39.0 degrees above the horizontal, he accidentally nudges his 93.0 N toolbox, causing it to start sliding downward, starting from rest.
Discover the tensions in the rope
A 2.47 kg steel ball strikes a massive wall at 11.7 m/s at an angle of alpha = 67.2° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.218 s, what is the magnitude of average force..
How far above the aim is the point
What is effectiveness of battery as an energy storage device
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