Graph Energy and Speed Practice Test

For a constant mass object, a student records these values:

Speed (m/s): 1, 2, 3, 4

Kinetic Energy (J): 1, 4, 9, 16

Which ratio stays constant for all rows in the table?

A student plots kinetic energy (J) vs speed (m/s) for a single object (constant mass). One point on the curve is (2 m/s, 4 J).

If the speed increases to 4 m/s, which kinetic energy value best matches the same curve?