Asteroids player control (Android)

@Override
public void update(float dt) {
    mRotation -= mEngine.mControl.mHorizontalFactor * (mMaxRotationSpeed * dt);
    //float accel = mEngine.mControl.mVerticalFactor * mThrust;
    float accel = 0f;
    if(mEngine.mControl.mJump) { //accelerator button, instead of joystick input
        accel = mThrust;
        float angle = (mRotation+90) * TO_RADIANS; //note, +90 deg!
        float ax = (float) Math.cos(angle) * accel;
        float ay = (float) Math.sin(angle) * accel;
        mVelX += ax*dt;
        mVelY += ay*dt;
        mVelX = Utils.clamp(mVelX, -mMaxVelocity, mMaxVelocity);
        mVelY = Utils.clamp(mVelY, -mMaxVelocity, mMaxVelocity);
    }else{
        mVelX *= mFriction; //break when there's no input
        mVelY *= mFriction;
    }
    mPos.x += mVelX;
    mPos.y += mVelY;
}