Flipit 1-7 - Homework and Exam Practice Problems PDF

Preview

Summary

Homework and Exam Practice Problems...

Description

1

PreLecture: Straight-Line Motion With Constant Velocity Consider a swimmer that swims a complete round-trip lap of a 50 m long pool in 100 seconds. The swimmer's... o o o o o

average speed is 0 m/s and average velocity is 0 m/s. average speed is 0.5 m/s and average velocity is 0.5 m/s. average speed is 1 m/s and average velocity is 0 m/s. average speed is 0 m/s and average velocity is 1 m/s. average speed is 1 m/s and average velocity is 1 m/s.

It takes you 15 minutes to drive 6.0 miles in a straight line to the local hospital. It takes 10 minutes to go the last 3.0 miles, 2.0 minutes to go the last mile, and only 30 seconds (= 0.50 minutes) to go the last 0.50 miles. What is your average velocity for the trip? Take the positive xx direction to be from your starting point toward the hospital. o o o o

6.0 mi/h 12 mi/h 24 mi/h 30 mi/h

2

Bridge Set: Straight-Line Motion With Constant Velocity The figure shows x-t graphs for four objects, all drawn on the same axes. Each object moves at a constant velocity from t = 0 to t = 5 s.

1) What is the correct ranking of the object’s velocities, from the most negative to the most positive?

o o o o

vi...