During a game of pool, a cue ball travels to the left with 70 N of force and collides with the four ball moving with a force of 50 N to the right. If you assign a negative value to the force moving to the right, what is the net force of this system?
To find the net force of the system, we need to add the forces together. Since the force to the right is assigned a negative value, we can consider it as a force of -50 N. Thus, the net force is given by:
Net force = 70 N + (-50 N) = 70 N - 50 N
Simplifying, we get:
Net force = 20 N
Therefore, the net force of this system is 20 N.
A hockey puck with a mass of 0.12 kg is traveling across the ice at a velocity of 150 m/s downfield. What is the momentum of the hockey puck?
To find the momentum of the hockey puck, we use the formula:
Momentum (p) = mass (m) * velocity (v).
Given that the mass of the hockey puck is 0.12 kg and the velocity is 150 m/s, we can substitute these values into the formula:
p = 0.12 kg * 150 m/s
Calculating, we get:
p = 18 kg·m/s.
Therefore, the momentum of the hockey puck is 18 kg·m/s.
Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In each trial of the experiment,%C2%A0the students will apply a net force on the object. They also need to take two other measurements. What are the other quantities they should measure in each trial of the experiment?
In addition to measuring the net force applied to the object, the students should also measure the following two quantities in each trial of the experiment:
1. Acceleration: The students should measure the acceleration of the object. Acceleration is the rate at which an object's velocity changes with time when a net force is applied to it. By measuring the acceleration, the students can determine how the object's motion changes in response to the applied force.
2. Mass: The students should measure the mass of the object. Mass is a fundamental property of an object that determines its inertia and resistance to changes in motion. By measuring the mass, the students can take into account the object's mass when analyzing the effect of the net force on its motion.
By measuring the net force, acceleration, and mass, the students can gather comprehensive data to analyze the relationship between net force and an object's motion according to Newton's second law of motion (F = ma).
Velocity and Acceleration Quick Check 2 of 52 of 5 Items Question Use the data table to answer the question.%C2%A0It shows the acceleration of a body when a net force is applied to it. Net force (N) Mass (kg) Acceleration (m/s2) 5.0 5.0 1.0 10.0 5.0 2.0 20.0 5.0 %C2%A0 Which value would complete the last cell?
To determine the value that would complete the last cell, let's analyze the data provided in the table. The table shows the relationship between the net force applied to a body, its mass, and its resulting acceleration.
In the first row, when a net force of 5.0 N is applied to a body with a mass of 5.0 kg, the body's acceleration is 1.0 m/s^2. In the second row, when a net force of 10.0 N is applied to the same 5.0 kg body, the acceleration increases to 2.0 m/s^2.
Based on this pattern, we can see that doubling the net force (from 5.0 N to 10.0 N) leads to a doubling of the acceleration (from 1.0 m/s^2 to 2.0 m/s^2). Therefore, if we double the net force again from 10.0 N to 20.0 N, we can assume that the acceleration will also double from 2.0 m/s^2.
Hence, the value that would complete the last cell is 4.0 m/s^2.