Question

NFL player Gerald Sensabaugh recorded a 46 inch standing vertical jump at the 2005 NFL Combine, at that time the highest for any NFL player in the history of the Combine. Sensabaugh weighed about 200 lb when he set the record. Part A What was his speed as he left the floor

Answer 1

His speed as he left the floor is 4.83 m/s.

Explanation:

Answer 2

His speed as he left the floor is 4.83 m/s.

Explanation:

Given: 46 inches = 1.1684 m and mass = 200 lb = 90.7185 Kg.

From the third equation of motion under free fall,

`V^(2)` =
`U^(2)` - 2gs

Where; V is the final velocity (0), U is the initial velocity (unknown), g is the value of gravity - 10 m/
`s^(2)` and s is the distance = 1.1684 m.

Then;

0 =
`U^(2)` - 2gs

`U^(2)` = 2gs

= 2 × 10 × 1.1684

= 23.368

⇒ U =
`√(23.368)`

= 4.8340 m/s

The initial velocity, U = 4.83 m/s.

Therefore, his speed as he left the floor is 4.83 m/s.