A rock is thrown straight up with an initial velocity of 25.0 m/s. What maximum height will the rock reach before starting to fall downward

31,86m

Explanation:

mgh=(mv^2)/2

gh=v^2/2

h=v^2/2g

h=25^2/2*9 81

h=31,86m

no. dot product   =0 when vecs at right angles

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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