The same motor is used in rockets with different masses. The rockets have different accelerations. According to Newton’s second law, how is acceleration expected to change as the rocket mass increases? (1 point)

Question

Responses

There are no changes in acceleration, as it would depend on the amount of force.
There are no changes in acceleration, as it would depend on the amount of force.

As rocket mass increases, acceleration decreases.
As rocket mass increases, acceleration decreases.

Acceleration cannot be predicted based on changes in mass.
Acceleration cannot be predicted based on changes in mass.

As rocket mass increases, acceleration increases.

Different amounts of force are applied to the same boat over several trials, and the acceleration is measured. In a graph of acceleration versus net force, what does the slope of the graph represent? (1 point)
Responses

the inverse of the mass of the boat
the inverse of the mass of the boat

the mass of the boat
the mass of the boat

the inverse of the speed of the boat
the inverse of the speed of the boat

the speed of the boat

Several motorboats with the same mass are used in an experiment. The forces of the different motors versus their accelerations are graphed. What is the y-intercept of this graph? (1 point)
Responses

the mass
the mass

zero
zero

the inverse of the mass
the inverse of the mass

the velocity

Which situation describes an object that is accelerating?(1 point)
Responses

when the velocity is constant
when the velocity is constant

when equal forces act simultaneously
when equal forces act simultaneously

when the velocity increases
when the velocity increases

when the net force is zero

Use the simulation to answer the question.

Force and Motion Basics (select Acceleration)

What happens to the acceleration when the net applied force acting on the box increases?

(1 point)
Responses

It remains the same.
It remains the same.

It decreases.
It decreases.

It becomes zero.
It becomes zero.

It increases.

Answer 1

1. According to Newton’s second law, as rocket mass increases, acceleration decreases.
   Correct Response: As rocket mass increases, acceleration decreases.

2. In a graph of acceleration versus net force, the slope of the graph represents the inverse of the mass of the boat.
   Correct Response: the inverse of the mass of the boat.

3. The y-intercept of the graph of forces versus accelerations for several motorboats with the same mass would be zero.
   Correct Response: zero.

4. An object is described as accelerating when the velocity increases.
   Correct Response: when the velocity increases.

5. When the net applied force acting on the box increases, the acceleration increases.
   Correct Response: It increases.