3. An object is thrown vertically downward at 5 m s-1 from a height of 30 m. Calculate (i) the speed of the object just before it hits the ground. [Answer: v= 24.77 m s`'] (ii) the time taken by the object to reach the ground. [Answer: 1= 2.02 s ]

3. An object is thrown vertically downward at 5 m s-1 from a height of 30 m. Calculate (i) the speed of the object just before it hits the ground. [Answer: v= 24.77 m s`'] (ii) the time taken by the object to reach the ground. [Answer: 1= 2.02 s ]

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 23CQ: If an object is thrown straight up and air resistance is negligible, then its speed when it returns...

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3. An object is thrown vertically downward at 5 m s-1 from a height of 30 m. Calculate
(i) the speed of the object just before it hits the ground. [Answer: v=24.77 m s¯' ]
(ii) the time taken by the object to reach the ground. [Answer: t= 2.02 s ]

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