Question

Question: While driving a car at 90 km/hr , how far do you move while your eyes shut for during a hard sneeze?

Short answer

Answer

The distance covered while eyes shut for 0.5 s during a hard sneeze is 13 m .

Step-by-step solution

Given data

The velocity of the car, v= 90 km/hr.

Time interval, $∆t=0.50s$.

 Step 2: Understanding the velocity

The velocity of any object is the rate of change of displacement with time. It is a vector quantity.

The expression for the velocity is as follows:

$v=\frac{∆x}{∆t}$ (i)

Here, $∆x$ is the displacement, and $∆t$ is the time interval.

Determination of the distance traveled

Converting speed from km/hr to m/s,

.$$\begin{gathered} v=\frac{90km}{h}\times \frac{1000m}{km}\times \frac{1hr}{3600s} \\ =25m/s \end{gathered}$$

From equation (i), the distance traveled is calculated as follows:

$$\begin{gathered} ∆x=v\times ∆t \\ =25m/s\times 0.5s \\ =12.5m \end{gathered}$$

Rounding to correct significant figures,

$∆x\approx 13m$

Thus, the distance traveled while the eyes are shut will be 13 m.