An airplane was moving 50 m/s to the north relative to the air at landing. The wind was blowing 5 m/s toward the south relative to the ground . What was the speed of the airplane relative to the ground at time of landing .

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z