A simlple machine of velocity ratio 20 is used to lift a load of 600N by applying effort of 40N. Calculate the mechanical advantage and efficiency Of the machine. it a science numerical can you tell me the answer by step by step​

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.