Abilliard ball of mass 0.28 kg hits a second, identical ball at a speed of 7.2 m/s and comes to rest as the second ball flies off. the collision takes 250 μs. what is the average force on the first ball? the second ball?

The average force on the first ball is -8,064 N

The average force on the first ball is 8,064 N

The formula for calculating the average force according to Newton's second law is expressed as:

m is the mass of the ball

v is the final velocity

u is the initial velocity

t is the time taken

Given the following parameters

m = 0.28kg

v = 0m/s

u = 7.2m/s

t = 250×10⁻⁶secs

Substitute the given parameters into the formula:

Hence the average force on the first ball is -8,064 N

For the average force on the second ball:

Hence the average force on the first ball is 8,064 N

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(a) -8064 N

(b) 8064 N

Explanation:

(a)

From Newton’s law of motion, Force, F=ma where m is mass and a is acceleration.

Since acceleration is the rate of change of velocity per unit time, then where v is velocity and the subscripts f and I denote final and initial

For the first ball, the mass is 0.28 Kg, final velocity is zero since it finally comes to rest, t is 0.00025 s and initial velocity is given as 7.2 s. Substituting these values we obtain

(b)

For the second ball, the mass is also 0.28 Kg but its initial velocity is taken as zero, the final velocity of the second ball will be equal to the initial velocity of the second ball, that is 7.2 m/s and the time is also same, 0.00025 s. By substitution

Here, we prove that action and reaction are equal and opposite

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.