Answer:
The answer is the 3rd option!
The boys body will continue to move in a forward motion, the stairs an an will make the skateboard come to a complete stop because the force of the stairs is much greater, this makes in an unbalanced force. This is and example of inertia of motion.
Ok? I don’t know what you want me to do though
Muscular strength is a measure of how much force you can exert in one repetition. Muscular endurance refers to the ability to perform a specific muscular action for a prolonged period of time.
Answer:
The northern lights, one of several astronomical phenomena called polar lights (aurora Polaris), are shafts or curtains of colored light visible on occasion in the night sky.
Explanation: