State the reason why they cannot perform any HRF

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f