Ng a science experiment, your teacher drops a tennis ball out of a window. The ball hits the ground 1.9 seconds later. (a) What was the ball's speed when it hit the ground? Ignore air resistance.

X m/sec

(b) What was the ball's average speed during the 1.9 seconds?

x m/sec

(c) How high was the windo?

x m

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.

What energy transformations occur each time the skateboarder rolls up the ramp?