Ask Question
15 October, 12:20

A 5kg wheel rolls off a flat roof of a 50 m tall building at 12m/s.

a. how long does it take the wheel to reach the ground?

b. How far from the base of the building does it hit?

+1
Answers (1)
  1. 15 October, 15:00
    0
    a) Given in the y direction (taking down to be positive):

    Δy = 50 m

    v₀ = 0 m/s

    a = 10 m/s²

    Find: t

    Δy = v₀ t + ½ at²

    50 m = (0 m/s) t + ½ (10 m/s²) t²

    t = 3.2 s

    b) Given in the x direction:

    v₀ = 12 m/s

    a = 0 m/s²

    t = 3.2 s

    Find: Δx

    Δx = v₀ t + ½ at²

    Δx = (12 m/s) (3.2 s) + ½ (0 m/s²) (3.2 s) ²

    Δx = 38 m
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A 5kg wheel rolls off a flat roof of a 50 m tall building at 12m/s. a. how long does it take the wheel to reach the ground? b. How far from ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers