1: Which person is not doing work? O A. A person climbing a hill
O B. Someone climbing stairs
O C. A person lifting a bag of sand
O D. A person holding a baby

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?