Force, Mass, & Acceleration: Solving the Puzzle

[softball1394]

1. A force acts on a 2 kg mass and gives it an acceleration of 3 m/s^2. What acceleration is produced by the same force when acting on a mass of (a) 1 kg? (b) 4 kg? (c) How large is the force?
Answers: (a) 6 m/s^2 (b) 1.5 m/s^2 (c) 6 N




2. -



3. I can't figure out what formula to use and, thus, how to show work. I'm in 11th grade and just start AP Physics two weeks ago. Let's just say I'm extremely confused. Thanks for the help! :)

 

[Doc Al]

What law relates force, mass, and acceleration?

 

[softball1394]

I'm pretty sure it's Newton's second law.

 

[Doc Al]

I'm pretty sure it's Newton's second law.

Exactly! That's all you need to solve this problem.

 

[softball1394]

so would it be...
f = m x a
f = 2 x 3
f = 6

(a)
f= m x a
6= 1 x a
a = 6

(b)
f= m x a
6= 4 x a
a= 1.5

(c)
f= 6N

Oh, wow. That was a lot easier than I thought ahah. Thanks!

 

[Doc Al]

Looks like you got it.