Answer:
<em>The collision last 0.83 s</em>
Explanation:
Using the equation of motion,
S = (v+u)t/2 ........................ Equation 1
making t the subject of the equation,
t = 2S/(v+u)..................... Equation 2
Where S = distance, v = final velocity, u = initial velocity, t = time
Given: v = 0 m/s, u = 29.0 m/s, S = 1.20 m,
Substituting these values into equation 2
t = 2(1.2)/(29+0)
t = 2.4/29
t = 0.83 sec.
<em>Thus the collision last 0.83 s</em>
