Answer:
- [tex]45\frac{5}{9} \ m[/tex]
Explanation:
1. We are given:
- [tex]v_0=82\ km/hr[/tex]
- [tex]v = 0[/tex]
- [tex]t=4\ sec[/tex]
- [tex]d=?[/tex]
2. Convert speed rate to m/s from km/hr:
- [tex]v_0=82\ km/hr=82\times1000\div3600\ m/s=\frac{205}{9} \ m/s[/tex]
3. Use this kinematic equation and solve it:
- [tex]d=\frac{(v_0+v)}{2}\times t[/tex]
- [tex]d=\frac{205}{18} \times 4=\frac{410}{9}=45\frac{5}{9} \ m[/tex]
