Intellectual disability is identified by significant limitations in both intellectual functioning and adaptive behavior.

Intellectual functioning is measured with individually administered and psychometrically valid, comprehensive, culturally appropriate, psychometrically sound tests of intelligence. While a specific full-scale IQ test score is no longer required for diagnosis, standardized testing is used as part of diagnosing the condition. 

A full-scale IQ score of around 70 to 75 indicates a significant limitation in intellectual functioning.2 However, the IQ score must be interpreted in the context of the person's difficulties in general mental abilities. Moreover, scores on subtests can vary considerably so that the full-scale IQ score may not accurately reflect overall intellectual functioning. Therefore, clinical judgment is needed in interpreting the results of IQ tests.

REF:

www.psychiatry.org/patients-families/intellectual-disability/what-is-intellectual-disability

Physical disability indicates any physical limitations or disabilities that inhibit the physical function of one or more limbs of a certain person. Mobility impairment includes upper or lower limb loss or impairment, poor manual dexterity, and damage to one or multiple organs of the body. Disability in mobility can be a congenital or acquired problem or a consequence of disease. People who have a broken skeletal structure also fall into this category. 

REF:

https://kines.rutgers.edu/dshw/disabilities/physical/1060-physical-disabilities

Weakness is a lack of physical or muscle strength and the feeling that extra effort is required to move the arms, legs, or other muscles. Type type of weakness may affect just one muscle or group of muscles.

It may be a minor limitation of the mental state or a learning disability.