A train starting from rest attance a velocity of 72 km hr in 2.5 min assuming that acceraleration is uniform (1) find the acceraleration (2) distance travel by the train.
Share
A train starting from rest attance a velocity of 72 km hr in 2.5 min assuming that acceraleration is uniform (1) find the acceraleration (2) distance travel by the train.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Verified answer
Answer:
u=0
v=72 km/hr = 72000/3600= 20m/s
t=2.5 min=150 second
Finding acceleration:-
a= v-u/t
a= 20–0/150
a= 20/150
a= 7.5 m/s²
Finding Distance:-
Using 3rd Equation Of Motion= 2as = v–u²
2as = v²–u²
2×7.5×s= (20)²–(0)²
15×s = 400–0
s = 400/15
s= 26.66 meters