Question

1. draw a force diagram for a ball rising in a parabolic trajectory. label the forces and use equality marks on the force vectors.

Explanation:

Step1: Identify the forces

The main force acting on the ball is gravity. Assume no air - resistance for simplicity. The force of gravity $\vec{F}_g$ acts downwards towards the center of the Earth.

Step2: Draw the force vector

Draw an arrow pointing downwards from the center of the ball representing the force of gravity $\vec{F}_g$. Since there is only one force acting on the ball in the absence of air - resistance, there are no other force vectors to compare for equality marks.

Answer:

Draw a single arrow pointing downwards from the center of the ball and label it $\vec{F}_g$ (force of gravity).