A particle is projected from an origin O at a velocity of (4i + 13j)m/s. Find the position vector of the particle 2 seconds after projection and the distance the particle is then from O(take g= 10m/s²

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.

In a series circuit the __ is the same at every point

Positive ions differ from neutral atoms in that