You are in an airplane, traveling relative to the ground at 500 km/hr. You throw a baseball toward the front of the plane at a speed of 50 km/hr. How fast would someone on the ground say the baseball is moving?
A. 550 km/hr
B. 50 km/hr
C. 500 km/hr
D. 450 km/hr.
Answer:A
You are in an airplane, traveling relative to the ground at 500 km/hr. You throw a baseball toward the front of the plane at a speed of 50 km/hr. How fast would someone on the ground say the baseball is moving?
A. 550 km/hr B. 50 km/hr C. 500 km/hr D. 450 km/hr.