an inline roler skate company is testing to see how quickly their new brakes will allow the skater to come to a stop. a skater starting at 8m/s puts on his brakes to come to a stop. it takes the skater 4 seconds to stop. what is the deceleration of the skater?
Divide the velocity change by the time. That is how acceleration is defined. Try to remember that.
(8m/s) / (4s) = ___ m/s^2
To find the deceleration of the skater, we can use the formula:
acceleration = (final velocity - initial velocity) / time
Given:
Initial velocity (u) = 8 m/s
Final velocity (v) = 0 m/s
Time (t) = 4 seconds
Substituting these values into the formula, we have:
acceleration = (0 - 8) / 4 = -8 / 4 = -2 m/s²
Therefore, the deceleration of the skater is -2 m/s² (negative because it represents deceleration or slowing down).