Questions 20–22 refer to the following scenario: A 2 kg ball with a velocity of -20 m / s collid

Name: Problem 20, Chapter 14: Cracking The AP Physics 1 Exam
Uploaded: 2021-04-08T14:57:07-08:00
Duration: 1 min 1 s
Channel: Sachin Rao
Description: Questions 20–22 refer to the following scenario: A 2 kg ball with a velocity of -20 m / s collides with the wall and bounces back with a velocity of 10 m / s What is the impulse during the collision? (A) 10 N ·s. (B) 20 N ·s (C) 30 N ·s . (D) 60 N ·s

step 1 This problem we have given mass of object which is a ball is 2kg. Initial speed is initial veloc

Question

Questions 20–22 refer to the following scenario: A 2 $\mathrm{kg}$ ball with a velocity of $-20 \mathrm{m} / \mathrm{s}$ collides with the wall and bounces back with a velocity of 10 $\mathrm{m} / \mathrm{s}$ What is the impulse during the collision? (A) 10 $\mathrm{N} \cdot \mathrm{s}$. (B) 20 $\mathrm{N} \cdot \mathrm{s}$ (C) 30 $\mathrm{N} \cdot \mathrm{s}$ . (D) 60 $\mathrm{N} \cdot \mathrm{s}$

   Questions 20–22 refer to the following scenario:
A 2 $\mathrm{kg}$ ball with a velocity of $-20 \mathrm{m} / \mathrm{s}$ collides with the wall and bounces back with a velocity of 10 $\mathrm{m} / \mathrm{s}$
What is the impulse during the collision?
(A) 10 $\mathrm{N} \cdot \mathrm{s}$.
(B) 20 $\mathrm{N} \cdot \mathrm{s}$
(C) 30 $\mathrm{N} \cdot \mathrm{s}$ .
(D) 60 $\mathrm{N} \cdot \mathrm{s}$

Cracking The AP Physics 1 Exam

Robert Franek 1st Edition

Chapter 14, Problem 20

Instant Answer

Solved by Expert Sachin Rao

04/08/2021

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Questions 20–22 refer to the following scenario: A 2 $\mathrm{kg}$ ball with a velocity of $-20 \mathrm{m} / \mathrm{s}$ collides with the wall and bounces back with a velocity of 10 $\mathrm{m} / \mathrm{s}$ What is the impulse during the collision? (A) 10 $\mathrm{N} \cdot \mathrm{s}$. (B) 20 $\mathrm{N} \cdot \mathrm{s}$ (C) 30 $\mathrm{N} \cdot \mathrm{s}$ . (D) 60 $\mathrm{N} \cdot \mathrm{s}$

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Key Concepts

Momentum

Momentum is a measure of an object's motion, calculated as the product of its mass and velocity. It is a vector quantity, meaning it has both magnitude and direction, and is central to understanding collisions and dynamic interactions between objects.

Change in Momentum

The change in momentum is the difference between the final and initial momentum of an object. This concept is directly related to impulse, as the impulse experienced by an object is numerically equal to its change in momentum, with careful attention given to the direction indicated by the sign of the velocities.

Impulse

Impulse is a quantity that represents the effect of a force acting over a time interval, defined as the product of force and the time period during which it is applied. It is equivalent to the change in momentum of an object, making it a vector quantity that includes both magnitude and direction.

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