ニュース

On a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (the steeper the line) the faster the object is moving. Calculate the speed of the ...
The distance graph shows the height of a plane as it completes a journey. When the plane is at a height of 38,000 feet (ft), it travels at a constant speed of 550 miles per hour. The question asks how ...