# Forces - Problem

1. Feb 26, 2012

### -Physician

1. The problem statement, all variables and given/known data
What force is it needed to move a body from rest at velocity of 5m/s on distance 15m, for time of 2s. Assume no friction.

2. Relevant equations
$F_{net}=ma$

3. The attempt at a solution
Can I solve this problem without the mass of the body, if yes, what formula is needed? thanks!
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Feb 26, 2012

### LawrenceC

If you want an actual number for the force, then you need mass. Think about pushing a truck on ice (zero friction) versus pushing a small car. Wouldn't it require more force for the larger object to attain the same speed?