The crash happened shortly before 1:00 p.m. between Route 100 and Route 202 in West Whiteland, Chester County.
The view from Chopper 6 HD shows a dark-colored SUV with a white roof heavily damaged.
A number of rescuers are working frantically to free the people inside.
Police say the child was rushed to Paoli Hospital's Trauma Center. Medics say the child's injuries were not life-threatening.
The driver of the SUV was uninjured.
Police say it appears the SUV driver hit a stopped vehicle.
Part of Route 30 was closed for hours, finally reopening around 4:15 p.m.