Answer:
The average velocity of Jackson is 18.056 m/s South
The average velocity of Hunter is 10.65 m/s East
Explanation:
initial velocity of Jackson, u = 25 km/h east = 6.944 m/s east
time for this motion, = 20 minutes = 1200 seconds
⇒initial displacement of Jackson, = (6.944 m/s) x (1200 s) = 8332.8 m
Final velocity of Jackson, v = 45 km/h South = 12.5 m/s South
time at Jackson's final position, = 20 minutes + = 20 minutes + 20 minutes
time at Jackson's final position, = 40 minutes = 2400 s
⇒Final displacement of Jackson, = (12.5 m/s) x (2400 s) = 30,000m
Average velocity of Jackson;
initial velocity of Hunter, u = 45 km/h South = 12.5 m/s South
time for this motion, = 10 minutes = 600 seconds
⇒initial displacement of Hunter, = (12.5 m/s) x (600 s) = 7500 m
Final velocity of Hunter, v = 40 km/h east = 11.11 m/s east
time at Hunter's final position, = 30 minutes + = 30 minutes + 10 minutes
time at Hunter's final position, = 40 minutes = 2400 s
⇒Final displacement of Hunter, = (11.11 m/s) x (2400 s) = 26,664m
Average velocity of Hunter;