Question

alex, who has a mass of 100 kg, is skateboarding at 6.0 m/s when he smacks into a brick wall and comes to a dead stop in 0.20 s. part a find his deceleration. express your answer with the appropriate units. a = 30 m/s² previous answers correct part b find the force of impact. express your answer with the appropriate units. f = value units units input for part b submit previous answers request answer

Explanation:

Step1: Identify the mass and acceleration

Given mass $m = 100$ kg and acceleration $a=30$ m/s² (from part A).

Step2: Apply Newton's second - law

Newton's second - law is $F = ma$. Substitute $m = 100$ kg and $a = 30$ m/s² into the formula. So $F=100\times30$.

Answer:

$F = 3000$ N