A velocity-time graph shows the velocity of a moving ... Find the acceleration of the sledge when t = 6s. Draw a tangent to the curve at the point where t = 6s and draw two lines to form a right ...

As a tangent is a straight line it is described by an equation in the form \(y - b = m(x - a)\). You need both a point and the gradient to find its equation. You are usually given the point - it's ...