Question
Asked Nov 20, 2019
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8 A stone is dropped froma bridge 45 meters above
the surface of a river. What is the time required
for the stone to reach the water's surface?
[Neglect friction.]
(1) 9.2 s
(2) 4.6 s
(3) 3.0 s
(4) 0.22 s
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8 A stone is dropped froma bridge 45 meters above the surface of a river. What is the time required for the stone to reach the water's surface? [Neglect friction.] (1) 9.2 s (2) 4.6 s (3) 3.0 s (4) 0.22 s

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Expert Answer

Step 1

Write the kinematic expression for distance travelled

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a

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Step 2

Substitute the...

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(9.8 m/s') i (45 m)=(0) 2(45 m (9.8m/s =3.0 s

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Physics

Kinematics

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