Time, Distance And Speed - Essay Example

TIME, DISTANCE AND SPEED and Department al Affiliation Question If a vantravels for a distance of 18 km at an average speed of 75 km/h and then for a distance of 63 km at an average speed of 90 km/h, what is the total time for the journey in minutes, to the nearest minute? (Your answer should be a number, without units.) Answer: 56 Question 2 Convert the speed of 83 km/h to m/s. Give your answer to the nearest whole number. (Your answer should be a number, without units.) Answer: 23 Question 5 A roofer charges a £80 call out charge and then £40 for each hour worked.

Select the option that gives the correct formula for the amount £y of the bill if the work lasts x hours. Select one: y = 80x y = 80x + 40 y = 40x + 80 y = 40x y = 120x The answer is: Question 6 Which of the following inequalities correctly describes the interval shown below? The diagram shows a horizontal number line going from minus 2 to 2 in steps of 1. A horizontal line is drawn above the number line, with its left hand end above the minus 1, and its right hand end above the 0.

The line has a solid circle at its left hand end, and an empty circle at its right hand end. Select one: −1 ≤ x ≤ 0 x