Question

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

Answer 1

Answer:

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.