Answer:
1) A. 0.44 m/s East + 0.33 m/s North
2) A. 0 m/s²
3) A. a scalar calculated as distance divided by time.
4) B. 31 km per hour
Explanation:
1) Velocity is DISPLACEMENT over time.
at 1 m/s, total time of walking is 9000 seconds
displacement is 3000 m north and 5000 - 1000 = 4000 m east
4000 m/ 9000 s = 0.44 m/s E
3000 m/ 9000s = 0.33 m/s N
2) constant speed means no acceleration
3) A. a scalar calculated as distance divided by time.
4) displacement 50 km N and 80 km W
v = √(50² + 80²) / (1 + 2) = 31.446603... km/hr
