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Questions and Answers
The time rate of change of linear momentum of a body is equal to:
The time rate of change of linear momentum of a body is equal to:
- applied force (correct)
- displacement
- inertia
- speed
MLT represents the dimension of:
MLT represents the dimension of:
- pressure
- frequency
- density
- momentum (correct)
A car slows down its motion from 10 m/s to 6 m/s in 2 seconds. How far did the car travel during this time interval?
A car slows down its motion from 10 m/s to 6 m/s in 2 seconds. How far did the car travel during this time interval?
- 35 m
- 9 m
- 16 m (correct)
- 54 m
A moving object slows down from 12 m/s to rest at a distance of 20 m. What is the acceleration of the object?
A moving object slows down from 12 m/s to rest at a distance of 20 m. What is the acceleration of the object?
The gravitational constant G is used to calculate which of the following?
The gravitational constant G is used to calculate which of the following?
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Study Notes
Physics 1210: Mechanics
- Constants:
- Gravity (g) = 10.0 m/s²
- Gravitational Constant (G) = 6.67 x 10⁻¹¹ Nm²/kg²
Question 1: Time Rate of Change of Linear Momentum
- The time rate of change of linear momentum of a body is equal to the applied force.
- Linear momentum is the product of an object's mass and velocity.
- The change in momentum is calculated as the mass times the change in velocity.
Question 2: Dimensional Formula MLT
- Momentum has the dimensional formula MLT.
- M = mass, L = length, T = time.
- Momentum is calculated as mass times velocity.
Question 3: Constant Acceleration
- A car decelerates from 10 m/s to 6 m/s in 2 seconds.
- Determining the acceleration (a) using the formula: a = (vf - vi) / t = (6 - 10) / 2 = -2 m/s².
- Calculating the distance traveled (s) using the formula: s = vi*t + (1/2)at² = 10 * 2 + (1/2) * -2 * 2² = 16 meters.
Question 4: Constant Acceleration
- An object decelerates from 12 m/s to rest (vf = 0 m/s) over 20 meters.
- Calculating the acceleration (a) using the formula: a = (vf² - vi²) / 2s = ( 0² - 12²) / (2 * 20) = -3.6 m/s².
Question 5, 6, 7, 8, 9, 10, 11, 12, 13-24
- Please provide the full question details and the related text because the full questions are needed for an accurate analysis and note-taking.
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