First of all, we need to convert the energy produced from kilojoules to calories. 1 kJ corresponds to 239.1 cal, therefore:

And so now we can calculate the energy value of the oil:

Answer:

Workdone = 1476 Nm

Explanation:

Given the following data;

Force = 164 N

Mass = 55kg

Distance = 9 m

To find the work done;

Workdone = force * distance

Workdone = 164 * 9

Workdone = 1476 Nm

Therefore, the work done by the force on the television set is 1476 Nm.

Average speed = (total distance) / (total time).

Total distance = (100 miles + 30 miles + 75 miles) = 205 miles

Total time = (2 hours + 1 hour + 1 hour) = 4 hours

Average speed = (205 miles) / (4 hours) = 51.25 miles/hour

Rounded to the nearest whole number, that's **51 mph** .