Question

22 what is the speed of the ant? (answer in mph) 0.32 mph 26 light travels at a constant 3e8-m/s. how long dooes it take light to travel the 1.1e11-m between venus & the sun. (answer in s) 30 a hot air balloon travelled the circumference of the earth, 24,901-mi, in 1560-hrs (65-days). what was the average speed of the balloon? (answer in mph) 34 a hot air balloon travelled the circumference of the earth, 24,901-mi, in 1560-hrs (65-days). assuming the balloon ended exactly where it started, what was the displacement of the balloon? (answer in miles) 38 a hot air balloon travelled the circumference of the earth, 24,901-mi, in 1560-hrs (65-days). assuming the balloon ended exactly where it started, what was the magnitude of the average velocity of the balloon? (answer in mph)

Explanation:

Step1: Time = distance / speed

$t = \frac{1.1\times10^{11}\ \text{m}}{3\times10^{8}\ \text{m/s}}$

Step2: Calculate the quotient

$t = \frac{1.1\times10^{3}}{3} = \frac{1100}{3} \approx 366.67$
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Step3: Average speed = total distance / time

$v_{\text{avg}} = \frac{24901\ \text{mi}}{1560\ \text{hrs}}$

Step4: Compute the division

$v_{\text{avg}} \approx 15.96$
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Step5: Displacement = final - initial position

Displacement = $0\ \text{mi}$ (starts/ends at same point)
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Step6: Avg velocity = displacement / time

$v_{\text{velocity}} = \frac{0\ \text{mi}}{1560\ \text{hrs}} = 0$

Answer:

Question 26: $\approx 366.67\ \text{s}$
Question 30: $\approx 15.96\ \text{mph}$
Question 34: $0\ \text{miles}$
Question 38: $0\ \text{mph}$