Question

Plz answer this. Ram thrown up wala

Answer 1

Answer:

(a) 40 m/s

(b) 80 m

(c) 75 m above the ground

Explanation:

(a). time period = 8s

time of ascent = 4s

v = u - gt

0 = u - 10×4

u = 40 m/s

(b). s = ut - 1/2gt^2

s = 40×4 - 1/2×10×16

s = 160 - 80

s = 80 m

(c). time of ascent = 4s

so after 5s it will be 1s of descent

s = ut + 1/2gt^2

s = 0×1 + 1/2×10×1^2

s = 0 + 5

s = 5 m

80 - 5 = 75 m above the ground

Answer 2

please aap picture thik se loo.Samaj nahi aa rha.☺

Explanation:

i hope.I understand