Answer:
17.96m/s
Step-by-step explanation:
Based on law of conservation of momentum;
m1u1 +m2u2 =(m1+m2)v
v is the velocities of the car after impact
Substitute the given values
1300(20)+900(15) = (1300+900)v
26000 + 13500 = 2200v
39500 = 2200v
v = 39500/2200
v = 17.96m/s
Hence the speed of the cars after impact is 17.96m/s
(The answer is 12.082.) Juan used 12.082 meters of rope.
It is Obtuse since it greater than 90 degree
=Obtuse
Answer: subtract
Step-by-step explanation: 0 + (-12) = 0-12.
Answer:
-63x +28
Step-by-step explanation:
-7(9x-4)
We cannot solve, but we can simplify
Distribute
-7 * 9x -7 * (-4)
-63x +28
