Question

1. what does it take to change the direction or speed of an object?

more than one force

an unbalanced force

a balanced force

no force

Explanation:

To change the direction or speed of an object (i.e., to accelerate it), an unbalanced force is required. Balanced forces result in no change in motion (constant speed and direction, or rest). No force would mean no change, and "more than one force" isn't the key; the key is the net force being unbalanced. So the correct option is the one with "an unbalanced force".

Answer:

The option with "an unbalanced force" (the third option from the left, with the radio button above it).