Which Pairs Of Trajectories Have Ranges That Are Almost Equal?

Which pairs of trajectories have ranges that are almost equal?

 

Good Day...

Question:

Which pairs of trajectories have ranges that are almost equal?

Answer:

Trajectories at 15°and 75° and also Trajectories at 30°and  60°

In Science 9 Unit 4 Module 1

Activity: 4 " Curve me on an incline

The marble was launch in the same velocity with different angles (15°, 30°, 45°, 60°, 75°)

• Trajectories at 15°and 75°  have almost similar ranges. Trajectories at 30°and  60°also have almost similar but longer ranges than those for 15° and 75° .  

• The trajectory fired closest to or at 45°  covered the greatest range.

Hope it helps...=)