Question

You know how you close your eyes when you sneeze? Suppose you are driving along at a constant 99.9 km/h (i.e., 62 mi/h) and you experience a 1.00 s long, eyes-closed, giant sneeze. How many meters does the car travel while you are out of control?

Answer 1

You know how you close your eyes when you sneeze? Suppose you are driving along at a constant $99.9\ \mathrm{km/h}$ (i.e., $62\ \mathrm{mi/h}$) and you experience a 1.00 s long, eyes-closed, giant sneeze. How many meters does the car travel while you are out of control?

Solution:

We must convert the speed in meters per second:

$$9.99\ \frac{\mathrm{km}}{\mathrm{h}} = \frac{9.99}{3.6}\ \frac{\mathrm{m}}{\mathrm{s}} = 2.775\ \frac{\mathrm{m}}{\mathrm{s}}$$

Traveled distance:

$$D = V \cdot t = 2.775\ \frac{\mathrm{m}}{\mathrm{s}} \cdot 1\ \mathrm{s} = 2.775\ \mathrm{m}$$

Answer: car travel distance $D = 2.775\ \mathrm{m}$