Answer:
1. 4hrs
2. 3hrs
3. 30km
4. 250km
5. 35km
6. 51m/h
7. 4.5km/h
8. a. 70km/h ; b. 19.44m/sec
9. 61.2 km/h
10. 37.5 km/hr
Step-by-step explanation:
1. t=d/s
t= 300km / 75 km/h
t=4hrs
2. t=d/s
t= 96km / 32km/h
t= 3hrs
3. d=st
d= 60 km/h × 0.5 hr
d= 30km180km
4. d=st
d=50km/h × 5hrs
d= 250km
5. d=st
d= 10km/h × 3.5 hrs
d= 35km
6. s=d/t
s= 612 m/ 12hrs
s= 51 m/h
7. s=d/t
s= 9km / 2 hrs
s= 4.5km/hr
8. s=d/t
s= 140km / 2 hrs
s= 70km/hr
(to convert km/h to m/sec simply multiply the number by 5 and the divide it by 18.)
9. d=st
d= 60km/h × 3hr
d= 180km
d= 63hm/h / 2hrs
d=126km/h
180+126= 306
3+2=5
(Divide the total distance traveled by the total time spent traveling)
s= 306km / 5 hrs
s= 61.2 km/h
10. s=d/t
s= 150 km / 4hr
s= 37.5 km/h
hope it helps.
