Copy of AL Directions: The graphs show the results of four races by the same two students. Use the graphs to answer any
questions that follow
Graph 2
Graph 1
401
30
20
10
10
0
5 10 15 20 25 30
5 10 15 20 25 30
Timo (s)
Timo (s)
Graph 3
Graph 4
20
101
5 10 15 20 25 30
Timo (s)
5 10 15 20 25 30
Time (s)
1) in which graph does a student have a 10m head start?
a. Graph 1
b. Graph 2
C Graph
d Graph 4

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

How can you increase the strength of an electromagnet?