-2 Take the acceleration due to gravity as g = 9.8 m s Question 1 A person walks 0.86 km to their vehicle. While walking, the person's average step length is 52 cm Approximately, how many steps does the person take in walking the 0.86 km distance? O 7400 1650 O 280 3120 O 720 Question 2 A car travels 1000 metres in the positive x direction, then turns around and travels 500 m in the opposite direction and takes 100.0 seconds total for this movement. What is the average velocity c the car during this time? O 15.0 m/s in the negative x direction O 15.0 m/s in the positive x direction 15.0 m/s O 5.00 m/s in the negative x direction O 5.00 m/s in the positive x direction Question 3 A bike's position along the x axis follows this expression: x= -2.1t + +2 + 5 where the units for distance and time are meters and seconds, respectively. What is the object's displacement Ax between t = 2.3 s and t = 3.5 s? Give your answer to 1 decimal place