Answer:
The time of flight of the ball is 1.06 seconds.
Explanation:
Given 

Also, 

Let us say the velocity in the x-direction is  and in the y-direction is
 and in the y-direction is  . And acceleration in the x-direction is
. And acceleration in the x-direction is  and in the y-direction is
 and in the y-direction is  .
.
Also,  is distance covered in x and y direction respectively. And
 is distance covered in x and y direction respectively. And  is the time taken by the ball to hit the backboard.
 is the time taken by the ball to hit the backboard.
We can write  . Where
. Where  is velocity of ball.
 is velocity of ball.
Now,

 
Also, 
 .
.
Plugging this value in
 

So, the time of flight of the ball is 1.06 seconds.
 
        
             
        
        
        
Answer:
25.59 m/s²
Explanation:
Using the formula for  the force of static friction:
 --- (1)
 --- (1)
where;
 static friction force
 static friction force
 coefficient of static friction
 coefficient of static friction
N = normal force
Also, recall that:
F = mass × acceleration
Similarly, N = mg
here, due to min. acceleration of the car;

From equation (1)

However, there is a need to balance the frictional force by using the force due to the car's acceleration between the quarter and the wall of the rocket.
Thus,




where;
 and g = 9.8 m/s²
 and g = 9.8 m/s²


 
        
             
        
        
        
Answer:

Explanation:
Since the cardinal and ball have the same kinetic energy, it is possible to determine the ratio between speeds. (c for cardinal, b for baseball)



The ratio is obtained by multiplying each side by  :
:


The value of this ratio is:

 
        
                    
             
        
        
        
Answer:
  
Explanation:
Point beneath you forms a beautiful iridescent green 
refractive index of Gasoline 
Wavelength of Green light is 
Here light first traverse from air(n=1) to gasoline , it reflects from  front surface of gasoline(n=1.38) so it suffers a phase change. After this light reflect from rear surface of gasoline and there is a decrease in refractive index(n=1.38 to n=1.33), so there is no phase change occurs .
For constructive interference 

here t= thickness of gasoline film
n=refractive index
for 


 
                                                       
 
        
             
        
        
        
Explanation: Newton's first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion.