A person pushes a chair across the room. The chair has a mass of 30kg. The coefficient of friction between the chair and the floor is 0.55. What is the force required to move the chair?

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?