Question
A car travels 300 km at a speed of 60 km/h and another
200 km at a speed of 80 km/h. Find the approximate average speed of the car for the entire journey.Solution
Total distance = 300 km + 200 km = 500 km Total time = 300 km / 60 km/h + 200 km / 80 km/h = 5 hours + 2.5 hours = 7.5 hours Average speed = Total distance / Total time = 500 km / 7.5 hours = 66.67 km/h or 68 km/h (approximately)
Who invented the cloud chamber?
Ebola disease is caused by which of the following?
The scientific discipline concerned with the description of rock successions and their interpretation in terms of a general time scale is called?
Which name is commonly used for "Sirius," the brightest star visible outside our solar system?Â
Why are mud houses more thermally comfortable than brick houses?
Who discovered the Rh factor in blood in the year 1940?
What is the chemical symbol for Gold?
How does a bulb glow when the switch is turned on?
Which company launched the inaugural batch of satellites with "Direct-to-Cell" technology?
Which part of cinnamon tree is used in medicines?
