Question

Please tell me the answer of both the question.

Answer 1

Answer:

1.27km/h

2.833.33m

Explanation:

1. first answer is in the photo above
2. second Answer:u = 10 km/h = 10 × 5/18 m/s = 25/9 m/s
4. v = 40 km/h = 40 × 5/18 m/s = 100/9 m/s
6. t = 2 min = 120 s
8. a = (v-u)/t = (100/9 – 25/9)/120 = 75/(9 × 120) = 5/72 m/s²
10. S = ut + ½ at²
12. S = 25/9 × 120 + ½ × 5/72 × 120²
14. S = 1000/3 + 500
16. S = 2500/3
18. S = 833.33 m