a car travels with speed 30 km per h on 30 min and then with 40 km for 1 h fond (a) the total distance traveled by car (b) the total time of travel (c) the average speed of car
Answers
Answer:
distance cover in 30mins= speed × time
= 30×1/2
=15km
distance cover in 1hr=speed ×time
=40×1
=40km
total distance cover by car=40+15
=55
total time = 1+1/2
=3/2
Average of speed of car=total distance/total
time
= 55/3/2
= 55×2/3
= 110/3
=36⅔
Answer:
a) T1=1/2hr
V1=30km/hr
Speed = distance / time
30=s1/(1/2)
s1 =15km
now V2=40km/hr
T2=1hr
speed = distance/time
40 = s2/1
s2=40m
total distance travelled by car = s1+s2 = 15+40 = 55m
b) Total time taken = T1 + T2 = 1/2 + 1 = 3/2 hr
c) Average speed = Total distance / Total time
= 55/(3/2) = 110/3 km/hr