Answered: 2. A man walks 7km to the east in 2…

2. A man walks 7km to the east in 2 hours and 2km in 1 hour in the same direction. Find the average speed and velocity for the whole journey.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 57P: In 1999, Robbie Knievel was the first to jump the Grand Canyon on a motorcycle. At a narrow part of...

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Question

ANSWER THE NUMBER 2 ONLY.

1. A little girl throws her ball horizontally out of the window with a velocity of 30m/s. If the window
is 3m above the ground level, then how far will the
hits the ground? Find the displacement for x axis. For
ball travel before it
the time use the
formula:
gravity
GIVEN:
REQUIRED:
EQUATION:
SOLUTION:
ANSWER:
2. A man walks 7km to the east in 2 hours and 2km in 1 hour in the same direction. Find the average
speed and velocity for the whole journey.
GIVEN:
REQUIRED:
EQUATION:
SOLUTION:
ANSWER:
3. How long does it take to increase a cars velocity from 5 m/s to 15 m/s if the car can accelerate
at a rate of 2 meters per second?
GIVEN:
REQUIRED:
EQUATION:
SOLUTION:
ANSWER:
4. A ball is thrown vertically upward with a speed of 4.9 m/s. What is the time of the flight?
GIVEN:
REQUIRED:
EQUATION:

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