Physics, 03.08.2019 06:30 bombbomb2157

Abaseball has a mass of 145 g. a bat exerts a force of 18,400 n on the ball. what is the acceleration of the ball?

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Answer from: jalonjonrs5586

Newton's 2nd Law F=ma

a= F/m = 18400/0.145 = 126897 m/s^2

Answer from: skylerteaker

1.27 x 10^5

Explanation:

You have to convert 145g into the standard unit for mass, which is kilograms. The formula would then be a = 18400N/0.145kg

Plus I took the quiz on Edge. It’s not 1.27 x 10^2

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

Isso9

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Abaseball has a mass of 145 g. a bat exerts a force of 18,400 n on the ball. what is the acceleratio...

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