Train Motion
160
B
140
120
100
80
Distance from station (km)
60
40
20
0
0
10
20
50
60
70
30 40
Time (min)
a) Which train covered more distance?
b) What is the distance covered by train B in 30 min.
c) At 50minutes which train covered more distance and by how much?
d) Find the average speed of train A and train B? Which train moved with a greater speed to
reach the destination?
Please solve the question fast will mark you brainliest
Answers
Answer:
please mark me as brainliest
Step-by-step explanation:
When a moving object having some length crosses an another moving object of some length, It travels the sum of distance of its own and the distance of another abject.
Let the length of the first train (L1) and the length of another train is (L2).
Total distance = L1+L2 = 140 + 160 = 300 meter.
But when an object with some speed passes an another moving object it travels with a relative speed of the objects.
In case of opposite direction their relative speed will be the sum of their speed (S1 + S2) km/hr.
Speed of the first train (S1) = 60km/he and the speed of the another train (S2) = 40km/hr.
So relative speed of both the trains will be (60+40) km/hr or 100 km/hr or (100*5)/18 m/s or 500/18 or 250/9 m/s
By using basic formula of time speed and distance
Time = distance/speed
Time = (300)/(250/9) or 2700/250 or 54/5 or 10.8 seconds
Answer:
70 is the answer is it correct