On May 15, 2017, about 1330 eastern daylight time, a Mooney M20E airplane, N9265M, was substantially damaged when it impacted trees, a fence, and a pole, while landing at a private grass airstrip near Dowling, Michigan. The private pilot was not injured. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91 without a flight plan. Visual meteorological conditions prevailed for the flight that departed W K Kellogg Airport (BTL), Battle Creek, Michigan, and was en route to the private airstrip.According to the pilot, during the flight the airspeed indicator did not indicate as high as it normally would. He landed uneventfully at BTL to drop off a passenger and then continued to the private airstrip (2,000 feet by 120 feet, grass) for a full-stop landing. While on final approach, the pilot decreased airspeed to 70 miles per hour (mph); however, the airplane would not settle so he initiated a go around. During the second attempt to land, the pilot decreased airspeed to 60 mph, but the airplane still would not land. The pilot stated that he "forced" the airplane to land. During touchdown the airplane porpoised and continued off of the runway hitting trees, a fence, and a pole. According to the Federal Aviation Administration inspectors who responded to the accident, the left main landing gear and nose gear collapsed. The right wing sustained substantial impact damage to the leading edge and the spar. The pitot tube separated from the airplane and could not be functionally tested. During the examination of the pitot static system debris was recovered from the pitot tube that appeared organic in nature, consistent with the remains of an insect. A functional test of the airspeed indicator revealed no anomalies that would have precluded normal operation.