Question

An Olympic sprinter can go from a state of rest to 11 meters per second in 10 seconds. What is the sprinters average acceleration? A. 1.1 m/s^2 B. 110 m/s^2 C. 0.9 m/s D. 110 m/s

Answer 1

Option A

The sprinter's average acceleration is
`1.1m/s^(2)`

Explanation:

The sprinter's average acceleration can be found by means of the kinematic equation that corresponds to a Uniformly Accelerated Rectilinear Motion.

`a = (v_(2)-v_(1))/(t)` (1)

Where
`v_(2)` is the final velocity and
`v_(1)` is the initial velocity

The initial velocity of the sprinter will be zero (
`v_(1) = 0`) since she starts from a state of rest.

`a = (11m/s-0m/s)/(10s)`

`a = 1.1m/s^(2)`

Hence, the sprinter's average acceleration is
`1.1m/s^(2)`

Answer 2

The average acceleration of the Olympic sprinter can be calculated by dividing its speed with the given time. Mathematically,
average acceleration = 11 m/s / 10 s
This gives us the answer of 1.1 m/s^2. Thus, the answer is letter A.