True or False: The work done during an eccentric contraction is positive work.

Two football players collide and move together as one mass afterwards. Player 1 is 90kg and is moving at 4m/s, and Player 2 is 115kg and is moving at 3.2m/s. Which of the following details how you could find the velocity (and direction) the players will move in after they collide? 

What device is used to measure Ground Reaction Forces?

A 55 kg gymnast dismounts from the vault and sticks her landing. If she impacted the ground at a speed of –4.75 m/s, how would you calculate the effect of her landing technique on the forces she experienced in coming to a stop? Hard landing: dissipating a large force over short time (Δt = 0.20 s) Soft landing: dissipating a large force over long time (Δt = 0.60 s)

The following careers use Biomechanics EXCEPT

As the normal contact force increases, what happens to the friction force?

This graph is an example of what  

What method did Fisher and Braune develop that enabled three dimensional measures of motion? 

Amplification of DNA is accomplished by_________.

What is the primary purpose of casework in Congress?