A stone is projected downward from a bridge with an initial speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

5\,\text{m/s}

. It strikes the water below with a speed of

25\,\text{m/s}

. Estimate the height of the bridge above the water surface. (Take

g = 9.8\,\text{m/s}^2

and downward positive.) (a)

61.2\,\text{m}

(b)

33.2\,\text{m}

(c)

30.6\,\text{m}

(d)

20.4\,\text{m}