How to get current moving speed of the box2d object

Question

I apply force to the b2body, but would like to know is there a way to know what speed the b2body is after applyforce/applylinearimpulse?

b2Body* car;
b2Vec2 force = b2Vec2(0,100);
car->ApplyForce(force, car->GetPosition());

Answer 1

b2Vec2 vel = body->GetLinearVelocity();