The graph below describes the journey of a train between two cities. 1201
a) Work out the
acceleration, in km/h?,
in the first 15 mins.
100
80
b) Work out the distance
between the two cities. 60
Velocity (in km/h)
40
c) Work out the average
speed of the train during 20
the journey.
0!
9am
10am
Time
11 am
a)
2
b)
a =
200
km/h
D =
+ km
c)
S-
+
km/h
Submit Answer

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

Ithink your answer is b