midterm

Question 1

instantaneous velocity

Answer 1

velocity of object at certain time

Question 2

average velocity

Answer 2

ration of displacement to elapsed time

Question 3

acceleration

Answer 3

happens from change in speed or direction

Question 4

position time graph

Answer 4

• time on x, position on y
• slope = velocity (linear slope means constant velocity)
• positive slope = positive direction

Question 5

velocity time graph

Answer 5

• time on x, velocity on y
• one point = instantaneous velocity
• slope = acceleration, no slope = constant velocity
• area under curve = displacement (below x-axis is negative displacement)