The head of a rattlesnake can accelerate at 50 m / s^2 in striking a victim. If a car could do

Name: Problem 107, Chapter 2: Fundamentals of Physics
Uploaded: 2021-07-20T14:27:46-08:00
Duration: 1 min 30 s
Channel: Manish Kumar ( Iit K )
Description: The head of a rattlesnake can accelerate at 50 m / s^2 in striking a victim. If a car could do as well, how long would it take to reach a speed of 100 km / h from rest?

step 1 We got that acceleration a equal to 50 % 50 % 50 meters per second square right so basically we

Question

The head of a rattlesnake can accelerate at $50 \mathrm{~m} / \mathrm{s}^{2}$ in striking a victim. If a car could do as well, how long would it take to reach a speed of $100 \mathrm{~km} / \mathrm{h}$ from rest?

   The head of a rattlesnake can accelerate at $50 \mathrm{~m} / \mathrm{s}^{2}$ in striking a victim. If a car could do as well, how long would it take to reach a speed of $100 \mathrm{~km} / \mathrm{h}$ from rest?

Fundamentals of Physics

David Halliday,… 11th Edition

Chapter 2, Problem 107

Instant Answer

Solved by Expert Manish Kumar ( Iit K )

07/20/2021

Step 1

We know that 1 km = 1000 m and 1 hour = 3600 seconds. So, 100 km/h = 100 * (1000 m / 3600 s) = 100000 m / 3600 s = 27.78 m/s Now, we can use the formula for acceleration: a = (v_f - v_i) / t Show more…

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The head of a rattlesnake can accelerate at $50 \mathrm{~m} / \mathrm{s}^{2}$ in striking a victim. If a car could do as well, how long would it take to reach a speed of $100 \mathrm{~km} / \mathrm{h}$ from rest?

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Key Concepts

Acceleration

Acceleration is the rate at which an object's velocity changes over time. It is measured in meters per second squared (m/s²) and is crucial in determining how rapidly something can speed up or slow down, which is a fundamental aspect of kinematics in physics.

Unit Conversion

Unit conversion involves translating a measurement from one set of units to another to maintain consistency in calculations. Converting speed from kilometers per hour (km/h) to meters per second (m/s) is necessary for ensuring that the units used in a physics equation are compatible.

Kinematics Equations

Kinematics equations describe the motion of objects under constant acceleration. One common equation, t = v/a, where t is time, v is final velocity, and a is acceleration, is used to calculate the time required for an object to reach a certain speed from rest under constant acceleration.

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