# Homework Help: Forces acting on a thrown object

1. Jul 28, 2017

### Annabelle

1. The problem statement, all variables and given/known data
A ball with a mass of 200 g is thrown vertically upwards with an initial velocity of 16.0 m/s. It is allowed to fall back to its original position. Ignore air resistance.
Calculate the force acting on the ball during its upward movement.
2. Relevant equations
w=mg

3. The attempt at a solution
It's a really basic question, but I can't wrap my head around how or what it means by calculating force.
The only thing I've been able to think of given the data I have is weight force, but i'm not sure if that's what the question is asking me to do?
w=m*g
w=0.200*9.8
w=1.96N
I'm so sorry for the dumb question!

2. Jul 28, 2017

### cnh1995

Welcome to PF!

That is correct.

3. Jul 28, 2017

### Annabelle

Is it a correct answer to the question posed though? What if the ball is in a downward movement?

4. Jul 28, 2017

### haruspex

What do you think? Did you use the upward velocity in the calculation?

5. Jul 29, 2017

### Annabelle

No, but I'm confused as to whether I used the right equation to answer the original question.

6. Jul 29, 2017

### cnh1995

Yes, you did use the right equation to answer the original question.