if a baseball has a mass of 5 KG and accelerates at a rate of 20K/G^2, what is the value of the force that the player hit the ball at?

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

i guess it’s a and b

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

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