Answer:
if they are struggling to breathe, attempting to cough (like coughing something up) or asking for help whilst holding their stomach, neck
If they put their hands near their neck, if they're not breathing properly, if they aren't coughing.
Explanation:
0.4
f divided by m = a
Consider the east-west direction along x-axis and north-south direction along y-axis. In unit vector notation, velocities can be given as
= velocity of car A before collision = 0 i - j
= velocity of car B before collision = i + 0 j
= velocity of combination after collision = (35.8 Cos31.6) i - (35.8 Sin31.6) j = 30.5 i - 18.8 j
= mass of car A = 1750 kg
= mass of car B = 1450 kg
Using conservation of momentum
+ = ( + ) ( )
(1750) (0 i - j) + (1450) ( i + 0 j) = (1750 + 1450) (30.5 i - 18.8 j)
(1450) i - (1750) j = 97600 i - 60160 j
Comparing the coefficient of "i" and "j" both side
(1450) = 97600 and - (1750) = - 60160
= 67.3 km/h and = 34.4 km/