Question

1. when you are sitting in a car and the car hits the breaks, what causes your body to fall forward?

acceleration

speed

inertia

gravity

Explanation:

To solve this, we analyze each option:

• Acceleration: It refers to a change in velocity (speed or direction). When the car brakes, it decelerates (negative acceleration), but acceleration itself isn't the direct cause of the body falling forward.
• Speed: It's the rate of motion. The car's speed decreasing when braking doesn't directly explain why the body moves forward; it's about the tendency to maintain motion.
• Inertia: Newton's first law states that an object in motion tends to stay in motion (and at rest tends to stay at rest) unless acted on by a net external force. When the car brakes, the car slows down, but the body (due to inertia) wants to continue moving forward at the original speed, causing it to fall forward.
• Gravity: It's the force pulling objects toward the Earth. It acts vertically downward, not horizontally to cause the forward motion when braking.

So the correct answer is related to inertia.

Answer:

C. Inertia