A7.5 kg cannon ball leaves a canon with a speed of 185 m/s. find the average net force applied to the ball if the cannon muzzle is 3.6 m long.

We would like to know the average net force. Therefore, we can calculate the acceleration using:

x = 0.5*a*t^2

v = a*t

where x=3.6m and v=185 m/s.

Therefore,

t=v/a     and hence    x = 0.5*a*(v/a)^2 = 0.5 * (v^2)/a

so    a= (0.5*v^2)/x

Since we know the values for v and x, as written above, we can calculate a by plugging the numbers in.

The average net force will then be:

F = m*a,

where m=7.5kg.

The average net force applied on the ball is .

Explanation:

Given: A cannon ball leaves a canon with a speed of .

Calculating the acceleration using the formula:

Now, using the average net force formula:

Hence, the average net force applied on the ball is .

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we need to know the time interval during which the force acts. impulse of force = momentum change