A biker stands on the edge of a cliff \( 490 \mathrm{~m} \) above the ground and throws a stone horizontally with an initial speed of \( 15 \mathrm{~ms}^{-1} \). Which one of the following statement is correct?
(a) The time taken by the stone to reach the ground is \( 30 \mathrm{~s} \).
(b) The time taken by the stone to reach the ground is \( 20 \mathrm{~s} \).
(c) The speed with which it hits the ground is \( 99 \mathrm{~ms}^{-1} \).
(d) None of the above
📲PW App Link - [ Ссылка ]
🌐PW Website - [ Ссылка ]

свернуть