Answer:
Change in momentum will be -4.4 kgm/sec
So option (A) is correct option 
Explanation:
Mass of the ball is given m = 0.10 kg 
Initial velocity of ball 
And velocity after rebound 
We have to find the change in momentum 
So change in momentum is equal to  ( here negative sign shows only direction )
 ( here negative sign shows only direction )
So option (A) will be correct answer 
 
        
             
        
        
        
A nuclear power plant doesn't produce any of those things. It only produces electricity and heat. As long as there are no accidents, and the worn out nuclear fuel is handled properly, the nuclear plant isn't harmful to the environment at all.
        
             
        
        
        
Answer:
(A) The maximum height of the ball is 40.57 m
(B) Time spent by the ball on air is 5.76 s
(C) at 33.23 m the speed will be 12 m/s
Explanation:
Given;
initial velocity of the ball, u = 28.2 m/s
(A) The maximum height
At maximum height, the final velocity, v = 0
v² = u² -2gh
u² = 2gh

(B) Time spent by the ball on air
Time of flight = Time to reach maximum height +  time to hit ground.
Time to reach maximum height = time to hit ground.
Time to reach maximum height  is given by;
v = u - gt
u = gt

Time of flight, T = 2t

(C) the position of the ball at 12 m/s
As the ball moves upwards, the speed drops, then the height of the ball when the speed drops to 12m/s will be calculated by applying the equation below.
v² = u² - 2gh
12² = 28.2² - 2(9.8)h
12² - 28.2² = - 2(9.8)h
-651.24 = -19.6h
h = 651.24 / 19.6
h = 33.23 m
Thus, at 33.23 m the speed will be 12 m/s
 
        
             
        
        
        
Answer:
<em>The Number is concept. It is depending with what you mean by infinity. Some of the numbers include 1 through 2 or infinite. If you work with vector space of tuples with any components could be infinite you just know what typed of infinity work with.</em>
Explanation:
<em>May you have a bless day. And send positive all over the world.</em>
 
        
             
        
        
        
Answer:
c.holding a sign in the air 
Explanation:
because b is kinetic energy and a is also kinetic energy