Question

A car is traveling in a straight line along a high way at a constant speed of 80 miles per hour for 10 seconds. find its acceleration

Answer 1

Initial velocity, u = 80 miles/h = 8/6 miles/sec

Final velocity, v = 80 miles/h = 8/6 miles/sec

Here "u" and "v" are same because the car is travelling at constant speed which means that the speed does not change at all.

Time, t = 10 seconds

Acceleration, a = (v - u)/t

a = (8/6 - 8/6)/10 = 0/10 = 0 m/s^2

Answer 2

Answer:

0 m/s^2

Explanation:

We know that,

Acceleration is change of velocity (over time).

But Here is no change in velocity. Becase here given that "Constant Speed"

We know that,

Constant speed is the speed of an object remains the same - it does not increase or decrease. Here means that no change in velocity it will remain same "Zero Acceleration."