- #1

- 54

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So far all I can think of is... F=ma

m=20kg

a=?

a= Vf-Vi / t

..... im stuck ... all I can think of is F = mv (velocity being constant therefore its not accelearting? ) F = 20 kg x 2ms/ = 40Nm (j) ?

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- Thread starter bionut
- Start date

- #1

- 54

- 0

So far all I can think of is... F=ma

m=20kg

a=?

a= Vf-Vi / t

..... im stuck ... all I can think of is F = mv (velocity being constant therefore its not accelearting? ) F = 20 kg x 2ms/ = 40Nm (j) ?

- #2

PeterO

Homework Helper

- 2,430

- 54

So far all I can think of is... F=ma

m=20kg

a=?

a= Vf-Vi / t

..... im stuck ... all I can think of is F = mv (velocity being constant therefore its not accelearting? ) F = 20 kg x 2ms/ = 40Nm (j) ?

Not enough information.

We do know that no force is necessary to

As to attaining a vel of 2 m/s from rest, we need to know how quickly we want that to happen - ie the acceleration.

- #3

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