negative numbers to zero within formula

HI guys -

I'm stuck. I have a formula that is measuring water discharge. Here is my current formula: =3.33*E2^1.5*((4.75)-0.2*(E2))*7.48*60

it works great, however when it pulls in a negative number (no water discharging), then I get an error. is there a way to make it to automatically go to zero?

I've tried a couple different options but no luck, can someone help me out? Thank you!

Or try this ...

=IF(E2<0,0,3.33*E2^1.5*((4.75)-0.2*(E2))*7.48*60)