Given the relative speeds, I think it’s more likely the plane plowed into the helicopter than the other way around. The minimum speed of the jet (a CRJ 700) is about 145 knots indicated air speed, the max is about 470 knots. The Black Hawk has a minimum speed of zero, and a maximum of about 180 knots. The two might have been moving at a similar speed, but if one was moving faster and crashed into the slower-moving aircraft, it was almost certainly the jet that crashed into the helicopter.
Given the relative speeds, I think it’s more likely the plane plowed into the helicopter than the other way around. The minimum speed of the jet (a CRJ 700) is about 145 knots indicated air speed, the max is about 470 knots. The Black Hawk has a minimum speed of zero, and a maximum of about 180 knots. The two might have been moving at a similar speed, but if one was moving faster and crashed into the slower-moving aircraft, it was almost certainly the jet that crashed into the helicopter.