Brian build a house of cards 4.88 m tall. Suppose Brian throws a ball from ground level straight up so that the balls just passes the top of the card house with a speed of 2.0 m/s (final velocity) Calculate the initial velocity of the ball.

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:

-reverse card

friction

explanation:

they us to move forward and backwards

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank