1. A championship weightlifter raises a 240 kg mass a distance of 2.35 m. a. How much work does the weightlifter do?

W = m g h

b. If the lift is completed in 2.50 s, how much power was developed?

P = w / t

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

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration