What is the mass of the counterweight that must be used? the pulley is of negligible mass and is frictionless. the acceleration of gravity is 9.81 m/s 2 . answer in units of kg. 009 (part 2 of 2)

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

It can take some of those large , industrial vehicles up to feet to stop when traveling only 60 mph, and therefore , you shoukd be mindful to not be jn the traffic right in front of them a. 100 feet b. 200 feet c. 335 feet d. 425 feet

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c