1. Fill in the blanks FX FY F Angle (degrees) from the x axis 10 30 10 10 10 60 20 35 15 60 2. An airplane flew for one hour and
landed 120 miles north and 90 miles east from its origin. What was the distance traveled, speed and angle of direction from its origin? 3. A flagpole’s shadow is 50 meters long. The sun shines at an angle of 600 from the ground. How high is the flagpole? 4. A force has a magnitude of 50 newtons and direction of 400 from the x axis. Resolve the Fx and Fy components of the force. Also prove that these two forces can be resolved back to the original force.
1 answer:
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Answer:
v₀₂ = -2.67 m / s
Explanation:
Let's use the conservation of the moment, for this we define a system formed by the two cars.
Consider the north direction as positive and the subscript 1 will be used for car 1 and the subscript 2 for the second car
Initial instant. Before the crash
p₀ = -m₁ v₀₁ + m₂ v₀₂
Final moment. Right after the crash
p_f = (m₁ + m₂) v
p₀ = p_f
-m₁ + m₂ v_{o2} = (m₁ + m2) v_{f}
v₀₂ = +
let's calculate
v₀₂ =
v₀₂ = -2.67 m / s
the negative sign indicates that the carriage moves in the opposite direction of the temperies