sled takes 1.22 seconds to travel from A to B.
Explanation:
impulse = change in momentum
[tex]Force \times time = mass 2 \times velocity 2(vf) - mass 1 \times velocity 1(vo)[/tex]
[tex]F \times t = m(vf - vo)[/tex]
[tex]F \times u \times t = m(vf - vo)[/tex]
[tex]mg \times u \times t = m(vf - vo)[/tex] ( [tex]F = mg[/tex])
[tex]g \times u \times t = vf - vo[/tex]
[tex]t = \frac{vf -vo}{g \times u}[/tex]
[tex]t = \frac{(8 - 5)}{(9.8 \times 0.25)}[/tex]
[tex]t = 1.22 s[/tex]
t = 1.22 seconds.
