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Daisy254
Daisy254
21.08.2020 • 
Physics

Physics, please help. 5 questions, 30 points. 1. 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, the 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?(1 point)
acceleration and time

mass and acceleration

velocity and time

mass and velocity

2. Use the data table to answer the question. It 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
Which value would complete the last cell?
100.0
25.0
4.0
3.0
3. Use the data table to answer the question.
Net force (N) Mass (kg) Acceleration (m/s2)
2.4 0.25 9.6
1.4 0.25 5.6
3.2 0.25 12.8

4. Which statement correctly describes the quantitative relationship between acceleration and net force on an object shown in the data table?
When the net force applied to an object changes, the mass of the object also changes.
When the net force applied to an object changes, the mass of the object remains constant.
When the net force applied to an object changes, the acceleration changes by a different factor.
When the net force applied to an object changes, the acceleration changes by the same factor.

A group of students conducted several trials of an experiment to study Newton’s second law of motion. They concluded that tripling the mass required tripling the net force applied. What quantity were the students holding constant?(1 point)

acceleration

mass

net force

number of trials

5. A net force of 0.7 N is applied on a body. What happens to the acceleration of the body in a second trial if half of the net force is applied?(1 point)
The acceleration is the square of its original value.

The acceleration remains the same.

The acceleration is half of its original value.

The acceleration is double its original value.

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