Conceptual Physics: The High School Physics Program
Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
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Chapter 4, Problem 36A

Calculate the speed (in m/s) of a skateboarder who accelerates from rest for 3 seconds down a ramp at an acceleration of 5   m / s 2 .

Velocity acquired in free fall, from rest: v = g t

Expert Solution & Answer
Check Mark
To determine

Speed of skateboarder.

Answer to Problem 36A

  v=15m/s

Explanation of Solution

Given:

Acceleration from the rest, a=5m/s2

Time, t=3s

Formula Used:

From rest position,

Instantaneous speed = acceleration × time

  v=at

Calculation:

Putting the given values in above relation,

  v=5×3=15m/s

Conclusion:

Therefore, the speed of skateboarder is v=15m/s

Chapter 4 Solutions

Conceptual Physics: The High School Physics Program

Ch. 4 - For a freely falling object dropped from rest,...Ch. 4 - For a freely falling object dropped from rest,...Ch. 4 - How far will a freely falling object fall from...Ch. 4 - How far will an object move in one second if its...Ch. 4 - How far will a freely falling object have fallen...Ch. 4 - What does the slope of the curve on a...Ch. 4 - What does the slope of the curve on a...Ch. 4 - Does air resistance increase or decrease the...Ch. 4 - What is the appropriate equation for how fast an...Ch. 4 - Jogging Jake runs along a train flatcar that moves...Ch. 4 - Below we see before and after snapshots of a cars...Ch. 4 - These are drawings of Same-size balls of different...Ch. 4 - A track is made of a piece of channel metal bent...Ch. 4 - A ball is released from rest at the left end of...Ch. 4 - In the speed versus time graphs, all times t are...Ch. 4 - Calculate your average walking speed when you step...Ch. 4 - Calculate the speed of a bowling ball that moves 8...Ch. 4 - Calculate your average speed if you run 50 meters...Ch. 4 - Calculate the distance (in km) that Charlie runs...Ch. 4 - Calculate the distance you will travel if you...Ch. 4 - Calculate the distance (in km) you will travel if...Ch. 4 - Calculate the acceleration of a car (in km/h/s)...Ch. 4 - Calculate the acceleration of a bus that goes from...Ch. 4 - Calculate the acceleration of a ball that starts...Ch. 4 - Calculate the instantaneous speed (in m/s) at the...Ch. 4 - Calculate the speed (in m/s) of a skateboarder who...Ch. 4 - Calculate the instantaneous speed of an apple 8...Ch. 4 - On a distant planet a freely-falling object has an...Ch. 4 - A sky diver steps from a high-flying helicopter....Ch. 4 - Calculate the vertical distance an Object dropped...Ch. 4 - An apple drops from a tree and hits the ground in...Ch. 4 - Light travels in a straight line at a constant...Ch. 4 - a. If a freely falling rock were equipped with a...Ch. 4 - Which has more acceleration when moving in a...Ch. 4 - Correct your friend who says, 'The dragster...Ch. 4 - What is the acceleration of a car that moves at a...Ch. 4 - Tiffany stands at the edge of a cliff and throws a...Ch. 4 - A ball is thrown straight up. What will be the...Ch. 4 - Two balls are released simultaneously from rest at...Ch. 4 - Refer to the tracks in the previous problem. a....Ch. 4 - A dragster going at 15 m/s north increases its...Ch. 4 - An apple drops from a tree and hits the ground in...Ch. 4 - On a distant planet a freely falling object has an...Ch. 4 - If you throw a ball straight upward at a speed of...Ch. 4 - Hanna tosses a ball straight up with enough speed...Ch. 4 - Kenny Klutz drops his physics book off his aunts...Ch. 4 - Calculate the hang time of an athlete who jumps a...Ch. 4 - By any method you choose, determine your average...Ch. 4 - You can compare your reaction time with that of a...Ch. 4 - Calculate your personal 'hang time,' the time your...

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