Kinematics

Question 1

Units for Work

Units for Force

Answer 1

kg*m²/s²

kg*m/s²

Question 2

Difference between Avg. Speed and Avg. Velocity

Answer 2

Avg Speed= total distance traveled divided by time

Avg. Velocity= displacement divided by time

Question 3

How can acceleration change?

Answer 3

A change in speed or direction

Question 4

Directions of Acceleration and effects on Velocity

Answer 4

A in same direction as V, object speed is increasing

A perdendicular to V, object’s speed is constant

A in opposite direction from V, object’s speed decreasing

A at an angle between 0 and 90, speed increasing and direction is changing

A at an angle between 90 and 180, speed decreasing and direction is changing

Question 5

What is the slope of position vs. time graph

Answer 5

Velocity

Question 6

What is the slope of the velocity vs. time graph?

What is the area under this graph

Answer 6

acceleration

displacement

Question 7

Characteristics of Horizontal projectile motion

Answer 7

Velocity stays constant throughout

Experiences zero acceleration

Question 8

Charactersitics of Vertical Projectile Motion

Answer 8

Velocity at top of travel path equals zero

Uses gravity as acceleration