You're conducting a physics experiment on another planet. you drop a rock from a height of 2.3 m and it hits the ground 1.1 seconds later. what is the acceleration due to gravity on this planet?
a. 4.2 m/s2
b. 3.8 m/s2
c. 2.4 m/s2
d. 9.8 m/s2

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He can play two games. 13/4=3.253.25*2=6.5

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.

Ke reqd to move from 0 to 50 will be proportional to 50x50 or 2500. this is equal to w.  to change vel from 50 to 150 you need energy prop to 22500 - 2500 = 20,000. this corresponds to 8w.  best answer is a) . work reqd is prop to velocity squared.