Question 1

Use the Figure 2-12 below to answer the following question(s).
 
-At t = 10 s

Accepted Answer

The answer of Use the Figure 2-12 below to answer...

Question 2

-Figure 2-13 represents the velocity of a particle as it travels along the x-axis. What is the average acceleration of the particle between t = 1 second and t = 4 seconds?

Accepted Answer

The answer of 
-Figure 2-13 represents the velocity of a...

Question 3

Use the Figure 2-14 below to answer the following question(s).
 
-Based on all the graphical information

Accepted Answer

The problem does not provide specific graphical information or data about the positions or paths of C and D, so it is not possible to determine if or when they meet.

Question 4

Use the Figure 2-14 below to answer the following question(s).
 
-During the first 8 s

Accepted Answer

The answer of Use the Figure 2-14 below to answer...

Question 5

An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s². How much time does it take for the complete increase in speed?

Accepted Answer

The time taken can be calculated using the formula: time = (final speed - initial speed) / acceleration. Here, time = (160 m/s - 100 m/s) / 15 m/s² = 4.0 s.

Question 6

A car starting from rest moves with constant acceleration of 2 m/s² for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of -2 m/s². How far does it travel?

Accepted Answer

The answer of A car starting from rest moves with...

Question 7

-Figure 2-15 shows the velocity-versus-time graph for a basketball player traveling up and down the court in a straight-line path. Find the net displacement of the player for the 10 s shown on the graph.

Accepted Answer

The net displacement is the total distance traveled in one direction minus the total distance traveled in the opposite direction. In this case, the player travels 10 m to the right and then 8 m to the left, so the net displacement is 10 m - 8 m = 2 m.

Question 8

A car starts from rest and accelerates uniformly at 3 m/s². A second car starts from rest 6 s later at the same point and accelerates uniformly at 5 m/ s². How long does it take the second car to overtake the first car?

Accepted Answer

Explanation:The first car travels for 6 s before the second car starts. In this time, it travels a distance of 0.5 * 3 * 6^2 = 54 m.The second car travels for a time t before it overtakes the first car. In this time, it travels a distance of 0.5 * 5 * t^2.When the second car overtakes the first car, the two cars have traveled the same distance. Therefore, we can set the two distances equal to each other and solve for t:0.5 * 5 * t^2 = 54t^2 = 21.6t = 4.6 sThe second car overtakes the first car 6 s after the first car starts, so the total time taken is 6 + 4.6 = 10.6 s.

Question 9

A car decelerates uniformly and comes to a stop after 10 s. The car's average velocity during deceleration was 50 km/h. What was the car's deceleration while slowing down?

Accepted Answer

The car's average velocity during deceleration was 50 km/h, which is equal to 13.89 m/s. The car came to a stop after 10 s. So, the car's deceleration was (13.89 m/s) / (10 s) = 1.389 m/s^2, which is approximately equal to 10 km/h-s.

Question 10

A ball is released moving straight up at 15. m/s. At some time later it is falling downward at 15. m/s. What was the magnitude of its average velocity over this time period?

Accepted Answer

The average velocity is calculated as the total displacement divided by the total time. Since the ball returns to its starting point, the total displacement is 0, making the average velocity 0 m/s.

Question 11

For this problem, assume that the acceleration of gravity is 10 m/s² downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity after 3 s?

Accepted Answer

The initial velocity is 20 m/s upward. After 3 seconds, the velocity change due to gravity is 3 s * 10 m/s² = 30 m/s downward. The final velocity is 20 m/s upward - 30 m/s downward = 10 m/s downward.

Question 12

A bullet shot straight up returns to its starting point in 10 s. Its initial speed was

Accepted Answer

The bullet takes 5 seconds to reach its peak (half of the total time since the motion is symmetrical), and using the formula $v = gt$ where $g = 9.8 \, m/s^2$ (acceleration due to gravity) and $t = 5 \, s$, we find $v = 9.8 \times 5 = 49 \, m/s$.

Quiz 2: Kinematics: Description of Motion

Use the Figure 2-12 below to answer the following question(s) . -At t = 10 s

-Figure 2-13 represents the velocity of a particle as it travels along the x-axis. What is the average acceleration of the particle between t = 1 second and t = 4 seconds?

Use the Figure 2-14 below to answer the following question(s) . -Based on all the graphical information

Use the Figure 2-14 below to answer the following question(s) . -During the first 8 s

An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s². How much time does it take for the complete increase in speed?

A car starting from rest moves with constant acceleration of 2 m/s² for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of -2 m/s². How far does it travel?

-Figure 2-15 shows the velocity-versus-time graph for a basketball player traveling up and down the court in a straight-line path. Find the net displacement of the player for the 10 s shown on the graph.

A car starts from rest and accelerates uniformly at 3 m/s². A second car starts from rest 6 s later at the same point and accelerates uniformly at 5 m/ s². How long does it take the second car to overtake the first car?

A car decelerates uniformly and comes to a stop after 10 s. The car's average velocity during deceleration was 50 km/h. What was the car's deceleration while slowing down?

A ball is released moving straight up at 15. m/s. At some time later it is falling downward at 15. m/s. What was the magnitude of its average velocity over this time period?

For this problem, assume that the acceleration of gravity is 10 m/s² downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity after 3 s?

A bullet shot straight up returns to its starting point in 10 s. Its initial speed was

Quiz 2: Kinematics: Description of Motion

Use the Figure 2-12 below to answer the following question(s) . -At t = 10 s

-Figure 2-13 represents the velocity of a particle as it travels along the x-axis. What is the average acceleration of the particle between t = 1 second and t = 4 seconds?

Use the Figure 2-14 below to answer the following question(s) . -Based on all the graphical information

Use the Figure 2-14 below to answer the following question(s) . -During the first 8 s

An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s2. How much time does it take for the complete increase in speed?

A car starting from rest moves with constant acceleration of 2 m/s2 for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of -2 m/s2. How far does it travel?

-Figure 2-15 shows the velocity-versus-time graph for a basketball player traveling up and down the court in a straight-line path. Find the net displacement of the player for the 10 s shown on the graph.

A car starts from rest and accelerates uniformly at 3 m/s2. A second car starts from rest 6 s later at the same point and accelerates uniformly at 5 m/ s2. How long does it take the second car to overtake the first car?

A car decelerates uniformly and comes to a stop after 10 s. The car's average velocity during deceleration was 50 km/h. What was the car's deceleration while slowing down?

A ball is released moving straight up at 15. m/s. At some time later it is falling downward at 15. m/s. What was the magnitude of its average velocity over this time period?

For this problem, assume that the acceleration of gravity is 10 m/s2 downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity after 3 s?

A bullet shot straight up returns to its starting point in 10 s. Its initial speed was

An airplane increases its speed from 100 m/s to 160 m/s, at the average rate of 15 m/s². How much time does it take for the complete increase in speed?

A car starting from rest moves with constant acceleration of 2 m/s² for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of -2 m/s². How far does it travel?

A car starts from rest and accelerates uniformly at 3 m/s². A second car starts from rest 6 s later at the same point and accelerates uniformly at 5 m/ s². How long does it take the second car to overtake the first car?

For this problem, assume that the acceleration of gravity is 10 m/s² downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity after 3 s?