I need some help and I was wondering if you guys could give me some hints and stuff.
thanks a lot!!
Question 1
A force causes a certain acceleration. What acceleration would half of the original force cause?
a. The same amount
b. 1/2 times
c. 4 times
d. 2 times
Question 2
How does the forward force on a car compare with the resistive forces when the car maintains a constant speed and direction?
a. The forward force is less than the sum of the resistive forces
b. The forward force is greater than the sum of the resistive forces
c. The forward force equals the sum of the resistive forces
d. There is no forward force on the car
Question 3
The engine of a rocket in space, far from anywhere, applies a continual force to push the rocket along. When the engine stops the rocket will
a. stop accelerating.
b. continue accelerating
c. slow down
d. stop moving
Question 4
The force of gravity on the moon is 1/6 of the value on the Earth. Thus the mass of an object on the moon is
a. not related to its mass on Earth
b. exactly the same as its mass on Earth
c. 6 times more than on the Earth
d. 1/6 as much as its mass on Earth
Question 5
A train has a head on collision with a mosquito. The force causes an acceleration of the train which is
a. larger than that of the mosquito
b. smaller than that of the mosquito
c. equal to that of the mosquito
d. Need more information to answer
Question 6
Which of the following statements is true?
An object's acceleration is always in the same direction as its velocity (its direction of motion).
An object's acceleration is always in the same direction as the net force on it.
a. Neither
b. Only II
c. Both
d. Only I
I will be happy to critique your thinking.
This again....thanks....no thanks...I needed help with the questions....
Certainly! I apologize for the confusion earlier. Let's go through each question and I'll provide some hints to help you find the correct answers.
Question 1:
To determine the acceleration caused by half of the original force, you can use Newton's second law of motion, which states that force is equal to mass multiplied by acceleration (F = m*a). Since the mass remains the same, the acceleration will directly depend on the force. So, think about how the force and acceleration are related when one is reduced by half.
Question 2:
When a car maintains a constant speed and direction, it means there is no acceleration. According to Newton's first law of motion, an object at rest or moving at a constant velocity will continue to do so until acted upon by an unbalanced force. Consider the relationship between the forward force (required to overcome resistive forces) and the sum of the resistive forces acting on the car.
Question 3:
If the engine of a rocket in space stops applying a force, think about what would happen to the rocket's motion based on Newton's first law of motion. Does the rocket experience any external forces once the engine stops?
Question 4:
The force of gravity depends on the mass of an object. Consider how gravity on the moon compared to gravity on Earth affects the mass of an object on the moon. How is mass related to the force of gravity?
Question 5:
When a head-on collision occurs between the train and the mosquito, think about how the force experienced by each object is related to their respective masses and accelerations. Does the mass or acceleration of the mosquito have any impact on the force and acceleration experienced by the train?
Question 6:
Read each statement carefully and think about the relationships between acceleration, velocity (direction of motion), and net force based on Newton's laws of motion. Is either statement true or false, or are both statements true?
I hope these hints help you work through the questions! Once you've thought about them, feel free to provide your answers, and I'll be glad to help you further.