Answer:[tex]1.7\times 10[/tex]
Explanation:
Given
Force [tex]F=7 N[/tex]
time interval [tex]t=2.5 s[/tex]
Impulse is given by [tex]=Force \times time\ interval\ for\ applied\ force [/tex]
[tex]Impulse=7\times 2.5=17.5[/tex]
For two significant Figure
[tex]Impulse=1.7\times 10[/tex]