Using Newton's second law;
F = ma, where m = mass, a = acceleration or deceleration
a = Δv/t = (v-u)/t, but v= 0, u = 10 m/s, t = 1.
Then,
a = (0-10)1 = -10 m/s^2
Substituting;
F = ma = 10*-10 = -100 N
The mattress exerts 100 N to stop the ball.
Answer:
The new time period is 
Explanation:
From the question we are told that
The period of oscillation is 
The new length is 
Let assume the original length was 
Generally the time period is mathematically represented as

Now I is the moment of inertia of the stick which is mathematically represented as

So

Looking at the above equation we see that

=>
=> 
=> 
Where is the diagram? What is the question?
Answer:
The ability to react to a certain stimulus with a speedy and effective manner
Explanation:
Ball 4 because the higher the elevation is the greater the potential energy it has