According to Newton's Second Law of Motion, how much force must be applied to a 0.145 kg baseball for it to travel at 38 m/s²?

A.
F = ma-mg; therefore, it would take 4.0N of force.

B.
F = ma; therefore, it would take 5.5 N of force.

C.
F = mv; therefore, it would take 5.5 N of force.

D.
F = mg; therefore, it would take 1.42 N of force.

Question

According to Newton's Second Law of Motion, how much force must be applied to a 0.145 kg baseball for it to travel at 38 m/s²?
 
 A.
F = ma-mg; therefore, it would take 4.0N of force.
 
 B.
F = ma; therefore, it would take 5.5 N of force.
 
 C.
F = mv; therefore, it would take 5.5 N of force.
 
 D.
F = mg; therefore, it would take 1.42 N of force.

anonymous · Answer

you use force=mass*acceleration.

anonymous · Answer

Thank you ^_^

anonymous · Answer

it is a poor question though. because it doesnt talk about acceleration or time.

anonymous · Answer

There are a lot of poor questions like these, sadly! :\ I appreciate the help though.

anonymous · Answer

just the units imply acceleration. the words imply velocity