Please provide step by step solutions so I can understand them better. Thank you.

6. 7. S. 9. 10. Which of the follov. inc measurements contains three significant digits? (a) 0.030 m (b) 0.300 m (c) 3.003 m (d) 300 m Which of thc following is a scalar quantity that is never less than zero? (a) Weight (b) Work (c) Kinetic energy (d) Power Shcllev traveled 250 meters south in 45 seconds and then traveled 575 meters east in 55 seconds. What was the magnitude of Shellev's average velocity? m (a) 1.7 s (b) 3.9 s m (c) 6.3 s (d) 7.8 s The position of an object traveling along the x xis is plotted on the graph. Which of thc following statememts is true of the object s acceleration? (a) The acceleration is increasing. (b) The acceleration is decreasinc. (c) The acceleration IS constant but not zero. (d) The acceleration is zero. A rope pulls a 32.5-kc block upward with a constant acceleration of 5.21 Ineters per second squared. What is the tension in the rope? x 40 30 20 O (a) (b) (c) (d) Time In seconds a 624 N 748 N