Can you solves questions 2-6 ### Physics Concepts for High School Students#### I. Linear Motion at Constant Velocity (No Acceleration) or at Constant Acceleration- \(a =\) fixed value = a constant, \(V\) will be changed by \(a\) and \(V\) is NOT a constant.- For constant velocity \(V \Rightarrow d = V(t)\)- For constant acceleration \(a \Rightarrow\) - Three (3) equations are being used as follows: - \(V_f = V_i + a(t)\) ; \(d = V_i (t) + \frac{1}{2} a (t^2)\) ; \(V_f^2 = V_i^2 + 2 (a)(d)\) - \( \text{Speed} = \frac{\text{distance}}{\text{time}} \); \(\text{velocity magnitude} = \frac{\text{displacement}}{\text{time}}\)1. A person walks to the North direction for 120 m in 1 minute, then walks to the East direction for 160 m in 1 minute and 40 seconds. Find: - (a) the total distance - (b) the magnitude of the displacement - (c) the average speed - (d) the magnitude of the average velocity.2. A car at the initial speed of 5 m/s is being uniformly accelerated to a speed of 15 m/s for 5 seconds. Find: - (a) the acceleration magnitude - (b) the distance the car has traveled during the 5-second period.3. An object is freely falling from the top of a 120 m building. Find: - (a) the final speed when it reaches the ground. - (b) Find the time it will take to fall from the top of the building to the ground.4. The apparent weight of a person in an elevator being accelerated upward at a constant acceleration will be: - (a) smaller than that of his normal weight \(W = mg\) - (b) equal to his normal weight \(W = mg\) - (c) greater than his normal weight \(W = mg\)#### II. Two-Dimensional Motion**Projectile Motion**- **Initial Horizontal and Vertical Velocity** - \(V_{ix} = V_{i}

As per our guidelines we are supposed to answer only one question. Kindly repost other question as…

2. A car at the initial speed of 5 m/s is being uniformly accelerated to a speed of 15 m/s for 5 seconds. Find (a) the acceleration magnitude, (b) the distance the car has travelled during the 5 second period. 3. An object is freely falling from the top of 120 m building, Find (a) the final speed when it reaches the ground, (b) Find the time will it take to fall from the top of the building to the ground. Hollol 4. The apparent weight of a person in an elevator being accelerated upward at a constant acceleration will be (a) smaller than that of his normal weight W= mg (b) equal to his normal weight W = mg, (c) greater than his normal weight W = mg

2. A car at the initial speed of 5 m/s is being uniformly accelerated to a speed of 15 m/s for 5 seconds. Find (a) the acceleration magnitude, (b) the distance the car has travelled during the 5 second period. 3. An object is freely falling from the top of 120 m building, Find (a) the final speed when it reaches the ground, (b) Find the time will it take to fall from the top of the building to the ground. Hollol 4. The apparent weight of a person in an elevator being accelerated upward at a constant acceleration will be (a) smaller than that of his normal weight W= mg (b) equal to his normal weight W = mg, (c) greater than his normal weight W = mg

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

Can you solves questions 2-6

### Physics Concepts for High School Students

#### I. Linear Motion at Constant Velocity (No Acceleration) or at Constant Acceleration
- \(a =\) fixed value = a constant, \(V\) will be changed by \(a\) and \(V\) is NOT a constant.
- For constant velocity \(V \Rightarrow d = V(t)\)
- For constant acceleration \(a \Rightarrow\)
- Three (3) equations are being used as follows:
- \(V_f = V_i + a(t)\) ; \(d = V_i (t) + \frac{1}{2} a (t^2)\) ; \(V_f^2 = V_i^2 + 2 (a)(d)\)
- \( \text{Speed} = \frac{\text{distance}}{\text{time}} \); \(\text{velocity magnitude} = \frac{\text{displacement}}{\text{time}}\)

1. A person walks to the North direction for 120 m in 1 minute, then walks to the East direction for 160 m in 1 minute and 40 seconds. Find:
- (a) the total distance
- (b) the magnitude of the displacement
- (c) the average speed
- (d) the magnitude of the average velocity.

2. A car at the initial speed of 5 m/s is being uniformly accelerated to a speed of 15 m/s for 5 seconds. Find:
- (a) the acceleration magnitude
- (b) the distance the car has traveled during the 5-second period.

3. An object is freely falling from the top of a 120 m building. Find:
- (a) the final speed when it reaches the ground.
- (b) Find the time it will take to fall from the top of the building to the ground.

4. The apparent weight of a person in an elevator being accelerated upward at a constant acceleration will be:
- (a) smaller than that of his normal weight \(W = mg\)
- (b) equal to his normal weight \(W = mg\)
- (c) greater than his normal weight \(W = mg\)

#### II. Two-Dimensional Motion

**Projectile Motion**

- **Initial Horizontal and Vertical Velocity**
- \(V_{ix} = V_{i}

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