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3 February, 16:38

A truck travels beneath an airplane that is moving 160 km/h at an angle of 54.0 ◦ to the ground. How fast must the truck travel to stay beneath the airplane? 1. 118 km/h 2. 94.0 km/h 3. 132 km/h 4. 108 km/h 5. 98.7 km/h 6. 113 km/h 7. 89.3 km/h 8. 127 km/h 9. 122 km/h 10. 103 km/h

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  1. 3 February, 16:56
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    2. 94.0 km/h

    Step-by-step explanation:

    since the airplane is moving at angle of 54° from the ground, the horizontal component of the velocity is given by cos component

    speed of air plane = 160 km/hr

    horizontal component of velocity v = 160 cos 54°

    = 94.045 km/hr

    Thus the truck must travel at an speed of 94.0 Km/hr hence second option is correct.
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