v (m/s) velocity 10 30 (a) Walking velocity of Tom v (m/s) 20 velocity 10 t (sec) time 30 15 (a) Walking velocity of Susan t (sec) time The walking distance is velocity x time, if the velocity is constant.  If the velocity changes, the walking distance is the area under the time-velocity plot.  What is the walking distance of Tom and Susan?

A collie moves from a coordinate of x=-2m, y= 3m, z=1m to a coordinate of x=5m,y=6m,z=3m in a time of 2 seconds. What was the average speed of the collie during this time? A) 4.2 m/s B)2.1m/s c) 0.85 m/s D) 3.4 m/s e) it is impossible to determine with the information given.

A plot of velocity versus time for a car for the first 15 seconds of motion is shown in the diagram below. v, m/s 60 The distance traveled during these 15 seconds is: O 1.5 km O 650 m O 450 m O 275 m O 85 m 40 10 5 10 15 t, s

suppose you takes you 6 seconds to walk 12 meters down the hallway . what would be your average speed ? a) 2 m/s b) 36 m/s c) 3 m/s d) 72 m/s the velocity of an object is constant as long as both ______ and _____ are constant . a) motion , direction b) direction , time c) speed, distance d) speed , direction an increase in speed is known as _______ a) negative acceleration b) positive acceleration negative acceleration is also known as _______ a) acceleration b) velocity c) deceleration d) speed change

The velocity of a particle as a function of time is given by the graph below: velocity vs time 20 15 10 8 9 10 -5 -10 -15 -20 time (s) Part A The displacement of the particle would best be approximated as -5 m O -20 m O 20 m 95 m (s/w) Aapojan

If the building is 30.0 m high, how long does it take for the ball to hit the ground? What velocity is the ball traveling at when it hits the ground? Answers 4.44 s, -28.5m/s Both images have background info to help solve the practice problem

Remaining Time: 37 minutes, 50 seconds. ✓ Question Completion Status: QUESTION 2 O A ball is thrown from level ground with a velocity of 20 m/s at an angle of 30° above the horizontal. Determine; a. The time required to reach maximum height in meters b. The ball's maximum height in meters. c. The elapsed time just before the ball returns to the ground in seconds. d. The ball's x-coordinate at t = 1.5 seconds in meters. e. The magnitude of the ball's velocity at t = 1.5 seconds in m/s. f. The ball's direction of travel at t = 1.5 seconds in degrees. g. Is the ball rising or falling at t = 1.5 seconds? n ai | 2 N O|| 1. U1 m 3. Click Save and Submit to save and submit. Click Save All Answers to save all answers. 4 2.360 5.783 W 2 Pg

What is the displacement of the object from 2 to 7 seconds? Position (m) O NON A 0005 10 O O 5 m -6 O 12 m - 12 m - 8 m 0m O 8 m -5m Position vs Time Time (s) O 10

For the figure shown, determine the following: a. the acceleration( m/s2) of the particle at time t=18 sec b. the total distance( m) traveled after 18 seconds +5 10 19 20 25 time (s) 30 velocity (m/s)

A bike messenger travels at a constant v = 10m/s for 5s, changes his velocity to v = −2m/sfor 4s, stops for 10s, then rides at 4m/s for 12s.(a) Sketch a velocity vs. time graph for this motion.(b) Sketch a position vs. time graph for this motion.(c) What is the messenger’s average velocity?(d) What is the messenger’s average acceleration?(e) What is the messenger’s average speed?