Which answer is a scientifically accurate description of velocity?

Question 3 options:

a.The car traveled 70 mph north to Atlanta on Interstate 75.

b.The motorcyclist traveled along a highway at 55 mph.

c.The hiker began hiking the park's five-mile north hiking trail at 8:00 a.m. with plenty of daylight left to complete the hike before dark.

d.Walking south along the two-mile canyon trail generally takes less time than traveling the same trail north because walking south is all downhill.

Question

14-11-2016
Chemistry

Answered

Which answer is a scientifically accurate description of velocity?

Question 3 options:

a.The car traveled 70 mph north to Atlanta on Interstate 75.

b.The motorcyclist traveled along a highway at 55 mph.

c.The hiker began hiking the park's five-mile north hiking trail at 8:00 a.m. with plenty of daylight left to complete the hike before dark.

d.Walking south along the two-mile canyon trail generally takes less time than traveling the same trail north because walking south is all downhill.

Verified Answer :

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BarrettArcher BarrettArcher · Answer 1 · 2018-10-31T02:57:15-04:00

Answer : The correct option is (a).

Explanation :

Velocity : It is defined as the rate of change of position with respect to the time. It is a vector quantity.

For the velocity, both magnitude and direction are needed to define it.

The formula of velocity is,

\(\text{ Velocity}=\frac{\text{ Change in position}}{Time}\)

In option (a), both magnitude and direction are given. But in another options, directions and magnitude are not given.

According to the definition of velocity, the direction and magnitude are the important parameters without these parameters we can not described velocity.

So, the correct option is (a) the car traveled 70 mph north to Atlanta on Interstate 75.