Mechanics> A ball is dropped from a tower. In the la...

A ball is dropped from a tower. In the last second of its motion it travels a distance of 15m. Find height of a tower (g=10n/s)

Nisha , 7 Years ago

Grade 11

1 Answers

Arun

Hello Student,

s=(1/2gt^2-1/2g(t-1)^2)

=>s=1/2(g(2t-1))=15

=>2t-1=3

=>t=2

so height = 1/2gt^2=20m

Regards

Arun (askIITians forum expert)

Last Activity: 7 Years ago

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Mechanics> A ball is dropped from a tower. In the la...

A ball is dropped from a tower. In the last second of its motion it travels a distance of 15m. Find height of a tower (g=10n/s)

Nisha , 7 Years ago

Arun

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