Answer:
Explanation:
The acceleration of an object is calculated as
where
v is the final velocity
u is the initial velocity
t is the time taken for the velocity to change from u to v
For the rocket in this problem:
u = 0 (it starts from rest)
v = 440 m/s is the final velocity
t = 2.20 is the time taken
Substituting,
Answer:
Distance, d = 6.75 meters
Explanation:
Given that,
Time taken by the eyes to shut during a hard sneeze, t = 0.32 s
Speed of the car, v = 76 km/h = 21.11 m/s
We need to find the distance covered by the car during this time. The product of speed and the time taken by the car is called the distance covered by the it. Mathematically,
d = 6.75 meters
So, the car will cover 6.75 meters during that time. Hence, this is the required solution.
Angle made by the light ray with the surface of mirror is given as
degree
now as we know as per law of reflection that
angle of incidence = angle of reflection
So here we can say that
now the total angle that reflected ray will rotate with respect to incident ray is known as angle of deviation
so here reflected light will deviate by total angle of 40 degree fron its incident ray.