Physics, asked by shaviii777, 7 months ago

A stone is dropped from a bridge and it reaches the ground in 4 seconds. The height of the bridge is
(g%D9.8m/s)
किसी पुल से जब एक पत्थर नीचे गिराया जाता है तो वह 4 सेकण्ड में जमीन पर पहुंचता है तो पुल की ऊंचाई होगी-
(g= 9.8m/s2)
(A)78.4m
(B) 64m
(C)260m
(D) 2000m​

Answers

Answered by vipul12396
1

Answer:

x = a {t }^{2}  \div 2 \:  \:  + vt

v =0

a = 9.8

t=4

so X = 9.8×4×4/2

= 78.4 (a)

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