You MUST include units on every single answer! Otherwise, your answer will be counted as incorrect.
You MUST include units on every single answer! Otherwise, your answer will be counted as incorrect.
A bobsled team pushes on their (initially stationary) 400 kg sled for 5 seconds to get it up to a speed of 4 m/s
What is the KE of the sled after the push?
How much work do they do while pushing?
How much power do they exert?
A giant barbell is on the ground, then a weightlifter uses 400 Newtons of force to raise the barbell 2 meters, which takes 0.5 seconds.
How much work was done?
What is the final GPE?
What was the power required for this maneuver?
A hockey player uses 230 Watts of power to hit a 2 kg puck over the course of 1.5 seconds to get it moving.
How much work was done on the puck?
What is the puck's final KE?
What is the final velocity of the puck?