Answer:
wave theory, wave theory, both, both
Explanation:
Answer:
Explanation:
In mirror generally, the type of image that can be formed by an object placed in front of it can either be a real image or a virtual image. Virtual images are images that are formed behind the mirror.
Virtual images are also images that cannot be formed from a photographic screen i.e the image formed by an object in front of the mirror cannot be reproduced compare to a real image than can be formed on a screen. This is the reason why we are able to get a picture of our self when pictures are taken using a photograph (For real images). This is not the same for virtual images.
We can only see ourselves when we stand in front of a mirror but in actual fact, we cannot reproduce the image of us we are seeing in the mirror.
Answer
given,
mass of the steel ball = 35 g = 0.035 kg
the horizontal distance is
( v cos θ ) t = 4.8..........(1)
the vertical distance is
...(2)
since,
![(v sin \theta )t = 4](https://tex.z-dn.net/?f=%28v%20sin%20%5Ctheta%20%29t%20%3D%204%20)
![\dfrac{1}{2}gt^2 = (v sin \theta) t - 1.2](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7Dgt%5E2%20%3D%20%28v%20sin%20%5Ctheta%29%20t%20-%201.2)
..................(3)
using equation(2) and (3)
(v t)² (cos²θ+ sin²θ) = 4.8² + 4²
(v t)² = 39.04
![\dfrac{1}{2}gt^2 = 4 - 1.2](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7Dgt%5E2%20%3D%204%20-%201.2)
![t = \sqrt{\dfrac{2(4-1.2)}{9.8}}](https://tex.z-dn.net/?f=t%20%3D%20%5Csqrt%7B%5Cdfrac%7B2%284-1.2%29%7D%7B9.8%7D%7D)
t = 0.76 s
the speed is
vt = 6.25
v × 0.76 = 6.25
v = 8.22 m/s
Answer:
V = 0.9 m/s
Explanation:
The parameters given are:
Initial velocity U = 6.4 m/s
Time t = 0.64s
Height h = 2.05 m
To find the final velocity, let us use third equation of motion
V^2 = U^2 - 2gH
Since the ball is going upward, g will be negative
Substitute all the parameters into the formula
V^2 = 6.4^2 - 2 × 9.8 × 2.05
V^2 = 40.96 - 40.18
V^2 = 0.78
V = sqrt( 0.78)
V = 0.883 m/ s
V = 0.9 m/ s approximately
<h3>Hey Mate Here Is Your Answer</h3>
The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics. Kinematic equations are a set of equations that can derive an unknown aspect of the motion of a body if the other aspects are provided.
<h3>Hope This Helps You</h3>