QUESTION 5 What is the SI unit for kinetic energy? N (Newton) J (Joules) W (Watts) m (meters) QUESTION 6 Gravitational potential energy can be positive, negative, or zero depending on height measurement. True False QUESTION 7 Kinetic energy can be positive, negative, or zero. True False QUESTION 8 An object with a 1.79 kg mass moves with a velocity of 17.59 m/s. What is the object's kinetic energy in joules? QUESTION 9 In this lab, we will raise one end of the track in order to let a cart roll down on the track. For the optimal results, when the track is rasied, it should make an angle about 45 degrees above table surface. True False QUESTION 10 For the motion sensor to work properly, an object must be placed at least 30 cm 40 cm 50 cm 60 cm away from it.