Question

To burn the fats she accumulated during the enhanced quarantine time, Inday walks south at a speed of 3 m/s for 10 minutes. She then turns around and walks north a distance 1000 m in 5 minutes. What is her total distance covered?

a. 2,800 m

b. 11,800 m

c. 300,000 m

d. 2,030 m

Answer 1

Given:

$v_1=\rm 3\: m/s$

$t_1=\rm 10\: min=600\: s$

$t_2=\rm 5\: min=300\: s$

$d_2=1000\:\rm m$

The total displacement

$$d=d_1+d_2=v_1t_1+d_2\\ =\rm 3\: m/s*600\: s+1000\: m=2800\: m$$

Answer: A