a skateboarder traveling at 7.0 meters per second rolls at a stop at the top of a ramp in 3.0 seconds. what is the skateboarder’s acceleration

Answer 1

To calculate the skateboarder's acceleration, we can use the formula:

Acceleration = (Final velocity - Initial velocity) / Time

Given:
Initial velocity (u) = 7.0 m/s
Final velocity (v) = 0 m/s (as the skateboarder stops)
Time (t) = 3.0 seconds

Acceleration = (0 - 7.0) / 3.0
Acceleration = -7.0 / 3.0

Therefore, the skateboarder's acceleration is -2.33 m/s².