Question

The Space Shuttle travels at a speed of about 8.29 x 103 m/s. The blink of an astronaut's eye lasts about 104 ms. How many football fields (length = 91.4 m) does the Space Shuttle cover in the blink of an eye?

Answer 1

Answer on Question #38885, Physics, Mechanics | Kinematics | Dynamics

The Space Shuttle travels at a speed of about $8.29 \times 103 \, \text{m/s}$. The blink of an astronaut's eye lasts about $104 \, \text{ms}$. How many football fields (length = 91.4 m) does the Space Shuttle cover in the blink of an eye?

Solution:

Given:

- $v = 8.29 \cdot 10^{3} \, \text{m/s}$

- $t_{blink} = 104 \, \text{ms} = 104 \cdot 10^{-3} \, \text{s}$

- $L = 91.4 \, \text{m}$

Find:

- $K_{fields} - ?$

The kinematic equation that describes an object's motion is:

$$D = v \cdot t_{blink},$$

where $D$ is the distance traveled by Space Shuttle.

$$D = v \cdot t_{blink} = 8.29 \cdot 10^{3} \cdot 104 \cdot 10^{-3} = 826.16 \, \text{m}.$$ $$K_{fields} = \frac{D}{L} = \frac{826.16}{91.4} = 9.43 \approx 9$$

Answer. 9 fields.