Question

which statement provides the most complete description of an objects motion?
the bird - watcher followed the south trail a distance of five kilometers in 45 minutes.
the mixer blended the ingredients for the cake in under two minutes.
the lion had to run at 30 km per hour across the savannah to catch its prey.
the golfer sent the golf ball flying toward the cup to score a hole - in - one.

Explanation:

To describe an object's motion completely, we need information about its displacement (or distance with direction), and time (or speed).

• The first option “The bird - watcher followed the south trail a distance of five kilometers in 45 minutes” gives direction (south), distance (five kilometers), and time (45 minutes).
• The second option “The mixer blended the ingredients for the cake in under two minutes” only gives time.
• The third option “The lion had to run at 30 km per hour across the savannah to catch its prey” gives speed and direction but no specific time - distance combination for a complete motion description.
• The fourth option “The golfer sent the golf ball flying toward the cup to score a hole - in - one” gives direction but no distance or time.

Answer:

The bird - watcher followed the south trail a distance of five kilometers in 45 minutes.