-30 I think sorry if I’m wrong
        
             
        
        
        
The resultant vector can be determined by the component vectors. The component vectors are vector lying along the x and y-axes. The equation for the resultant vector, v is:
v = √(vx² + vy²)
v = √[(9.80)² + (-6.40)²]
v = √137 or 11.7 units
        
             
        
        
        
Answer:
20 meters.
Explanation:
In the graph, the x-axis (the horizontal axis) represents the time, while the y-axis (the vertical axis) represents the distance.
If we want to find the distance covered in the first T seconds, you need to find the value T in the horizontal axis.
Once you find it, we draw a vertical line, in the point where this vertical line touches the graph, we now draw a horizontal line. This horizontal line will intersect the y-axis in a given value. That value is the total distance travelled by the time T.
In this case, we want to find the total distance that David ran in the first 4 seconds.
Then we need to find the value 4 seconds in the horizontal axis. Now we perform the above steps, and we will find that the correspondent y-value is 20.
This means that in the first 4 seconds, David ran a distance of 20 meters.
 
        
             
        
        
        
Answer:
Light is shown through air on a diamond n=2.42) and it partially reflects and reflects. 
Based on the incident angle of 62.5 shown what is the angle of reflection of the light 
question of options 
21.5
 
        
             
        
        
        
Explanation:
unbalanced: a turning vehicle, apple falling on the ground, kicking a ball
balanced: floating on water, fruit hanging from tree, tug of war equally balanced teams