A car travel 240km in 6 hours .it travel partly at a speed of 60km/ hr and partly at a speed of 30km/hr .then the time (in hr) it travels at speed of 30km/hr is.
Answers
Answered by
1
Step-by-step explanation:
distance = 240km
time = 6hrs
u= 0km/hr
v1= 60km/hr
v2= 30km/hr
v3= 30km/hr
a= 90km
using the second Equation of motion
s=ut+1/2at^
240= 0(6)+1/2×90×(6)^2
240= 1/2×90×36
240= 1620
so, the time in 30km/he is 6.7hr.
I think u Understand the answer.
Similar questions