3
An archer defending a castle is on an
15.5 m high wall. He shoots an arrow
straight down at 22.8 m/s. How much
time does it take to reach the ground?
(Unit = s)
Watch your minus signs!

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad

If a rock is thrown upward on the planet mars with a velocity of 10 mys, its height in meters t seconds later is given by y − 10t 2 1.86t 2 . (a) find the average velocity over the given time intervals: (i) [1, 2] (ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001] (b) estimate the instantaneous velocity when t − 1.

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2. what is the value of the friction force on the box? 200 n 50 n 43 n 33 n