Please help!! thank you so much!! <3
2 answers:
Answer:
D. 4x as much
Explanation:
The answer is pretty simple. The question is asking about 10m/s and 20m/s right? Take a look at the energy at each point on the graph. At 10m/s the kinetic energy is 100 on the graph. At 20m/s the kinetic energy is 400. You'll notice that 100 x 4 is 400 - That's the answer.
You can also prove this mathematically. The formula for kinetic energy is
The question says: constant mass so we can ignore that for now.
(1/2) * 10^2 is (1/2) * 100 = 50
for the 20m/s ball it would be
(1/2) * 20^2 = 400 * 1/2 = 200
Once again, you see that it is 4x
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Answer:
The function in C++ is as follows:
int isSorted(int ar[], int n){
if ( ||
){
return 1;}
if ( <
){
return 0;}
return isSorted(ar, n - 1);}
Explanation:
This defines the function
int isSorted(int ar[], int n){
This represents the base case; n = 1 or 0 will return 1 (i.e. the array is sorted)
if ( ||
){
return 1;}
This checks if the current element is less than the previous array element; If yes, the array is not sorted
if ( <
){
return 0;}
This calls the function, recursively
return isSorted(ar, n - 1);
}