Aball is thrown upwards. after 2.5s, it has risen 50m. at what velocity was it thrown upwards? assume g = 10m/s squared.

32.5 m/s

Explanation:

Given:

Δy = 50 m

a = -10 m/s²

t = 2.5 s

Find: v₀

Δy = v₀ t + ½ at²

(50 m) = v₀ (2.5 s) + ½ (-10 m/s²) (2.5 s)²

v₀ = 32.5 m/s

wavelegth as in spectrum red oygbiv

wavelength divides in half and speed stays the same.