How long would it take you to hop 30 meters if you hopped 5 m/s?
1 answer:
You might be interested in
The stopping distance is 45.0 m
Explanation:
First of all, we find the acceleration of the truck, by using Newton's second law:
where
is the net force on the truck
is the mass of the truck
a is its acceleration
Solving for a,
where the negative sign means the acceleration is opposite to the direction of motion.
Now, since the motion of the truck is at constant acceleration, we can apply the following suvat equation:
where
v = 0 is the final velocity of the truck
u = 22.2 m/s is the initial velocity
is the acceleration
s is the stopping distance
And solving for s,
Learn more about accelerated motion:
#LearnwithBrainly
Explanation:
It is given that,
Angle of incidence from air to another medium, i = 26°
The angle of reflection, r = 32°
We need to find the refractive index of the medium. The ratio of sine of angle of incidence to the sine of angle of reflection is called refractive index. It can be given by :
So, the index of refraction is 0.82. Hence, the correct option is C.
Plz feel free to ask if u hv any confusion!!
