Answer:
C) 20 m/s
Explanation:
The collision of the car and truck will give a single resultant velocity due to equal masses.
We'll treat this question as a vector question.
The velocity profile will form a right angle triangle.
To calculate the velocity of the car
Let the velocity be x
Sina = x/28
Sin46= x/28
0.7193*28 = x
20 = x
X = 20 m/s
Answer:
They mainly consist of carbon dioxide and carbon mono oxide gas
I hope this helps
Answer:
Ray reflects internally
Explanation:
Given:
Ray in oil (n1) = 1.52
Ray in water (n2) = 1.33
θ = 55.9°
Computation:
Step 1 . Find critical angel(θc)
Sinθc/Sin90° = Ray in water / Ray in oil
Sinθc/1 = 1.33/1.52
θc = 61°
Since, θ = 55.9° is smaller than θc = 61°
So, Ray reflects internally.
After the ball leaves the thrower's hand, the only force on it is
due to gravity. There's no horizontal force acting on it at all. (C)