Which muscle group works the hardest (isometrically) when performing a wrist curl in the pronated position?
a. wrist flexors b. wrist extensors c. elbow flexors d. elbow extensors

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?