A 2-kg object is moving horizontally with a speed of 4 m/s.
How much net force is required to keep the object moving at this speed and in this direction?
6 points
6
Question 2
2.
In the helium balloon inside the car example, what was the conclusion the class reached as to why this did not violate the first law?
https://www.youtube.com/watch?v=XXpURFYgR2E
4 points
4
Question 3
3.
What is the gravitational force of 1kg?
6 points
6
Question 4
4.
A leftward force is applied to a dresser to accelerate it to the left across the bedroom floor. Ignore air resistance. (Grading on forces and magnitudes)
4 points
4
Question 5
5.
Why does constant velocity indicate NO net force?
4 points
4
Question 6
6.
What is the net force on the object?
4 points
4
Question 7
7.
Explain what is happening to the object using the word 'acceleration'.
4 points
4
Question 8
8.
In the situation above, the force of letter D must be _______ Newtons, and letter E must be pulling with a force of _______ Newtons.
2 points
2
Question 9
9.
A doubling of the mass results in a __________ of the acceleration (if force is held constant).
8 points
8
Question 10
10.
A rightward force is applied to a 10-kg object to move it across a rough surface at constant velocity. The coefficient of friction between the object and the surface is 0.2. Use the diagram to determine the gravitational force, normal force, applied force, frictional force, and net force. (Neglect air resistance.)
2 points
2
Question 11
11.
Explain what is meant by 'terminal velocity.'
4 points
4
Question 12
12.
Give an example of a action-reaction pair.
4 points
4
Question 13
13.
Determine the velocity of both the red and blue cart after the inelastic collision.
