Which example provides the most complete description of an object's motion?
1. the ballerina rotated 10 times in 2 minutes.
2. bobby threw a frisbee 10 m through the hoop.
3. the turtle took 20 minutes to make it to the other side of the road.
4. the hiker followed a road heading north for 2 miles in 30 minutes.

The hiker followed a road heading north for 2 miles in 30 minutes.

Explanation:

In order to describe the motion of an object, distance covered and time taken must be required. The total path covered by an object is called the distance travelled.

The hiker followed a road heading north for 2 miles in 30 minutes. This describes the motion of hiker. The motion shows how fast the hiker is moving.  

Distance, d = 2 miles = 3218.6 m

times, t = 30 minutes = 1800 seconds

So, we can say that the hiker is moving with a speed of 1.78 m/s in north direction.

Hence, this is the required solution.

In this case in option 4:

The hiker followed a northbound road for 2 miles in 30 minutes.

Explanation:

Hello ! Let's solve this!

To know the description of a movement we have to know the distance it travels and the time it takes to travel it.

In this case in option 4:

The hiker followed a northbound road for 2 miles in 30 minutes.

Distance: 2 miles

time: 30min

Then we can calculate the speed of the hiker

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4900=490xh

h=10

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