A road has a gradient of 1/15 for 90 m. Then there is a horizontal section 130 m long. The final section has a gradient of 1/25 for 200 m.
a Find the total height gained from start to finish.
b What is the average gradient from start to finish?​

True or false graphs must include scales that increase by the same amount

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Heterogeneous mixture with larger particles that never settle is