1. PAL - Forces  A student will jump on a platform. The platform will record the force it exerts on the student as a function of time. Recall that the net force is always in the same direction as the acceleration. (Positive is up) 1.First the student will jump and land on the platform. Will the force be positive, negative, or zero as the student lands on the platform?

2. PAL - Forces 3.Next the student will stand still for a moment on the platform. Will the force be positive, negative, or zero as the student stands on the platform? 4.Next the student will jump up from the platform. Will the force be positive, negative, or zero as the student jumps from the platform?

3. PAL - Forces 5.Will the force be positive, negative, or zero as the student is in midair above the platform? 6.Will the force be positive, negative, or zero as the student lands once again on the platform? 7.Which do you think will have the largest magnitude force – landing, standing, or jumping up?