FMA 1
Which statement best describes the role of mass in acceleration?
a. Mass has no effect on acceleration
b. Greater mass always results in faster acceleration
c. Mass affects how easily an object can be accelerated
d. Mass only matters for stationary objects
c. Mass affects how easily an object can be accelerated
In a model explaining force and acceleration, which component must be included?
a. Only visible components need to be labeled
b. The relationship between components must be shown
c. Time is the only necessary variable
d. Temperature variations must be included
b. The relationship between components must be shown
1. According to Newton's Second Law, what is the key force component that determines an object's motion?
a. Total force
b. Net force
c. Gravitational force
d. Frictional force
b. Net force
According to Newton's First Law, an object in motion will:
a. Always come to a stop eventually
b. Continue moving at the same speed and direction until acted upon by an unbalanced force
c. Accelerate continuously without additional force
d. Change direction randomly over time
b. Continue moving at the same speed and direction until acted upon by an unbalanced force
1. According to the data table, what happens to the braking distance as speed increases from 20 mph to 80 mph?
a. It increases exponentially
b. It remains constant
c. It increases linearly
d. It decreases gradually
a. It increases exponentially
2. When analyzing the relationship between vertical height and speed in the marble experiment, what would you expect to observe?
a. Higher vertical height results in lower speed
b. Vertical height has no impact on speed
c. Speed remains constant regardless of height
d. Higher vertical height results in greater speed
d. Higher vertical height results in greater speed
When creating a scientific model for force and acceleration, what is essential?
a. It must be able to predict outcomes
b. It only needs to show current conditions
c. Visual appeal is the main priority
d. Historical data must be included
a. It must be able to predict outcomes
If one adult can exert 150 Newtons of force and one teenager can exert 100 Newtons of force, what would be the net force if they pulled in opposite directions?
a. 250 Newtons in the adult's direction
b. 50 Newtons in the adult's direction
c. 150 Newtons in the teenager's direction
d. 0 Newtons
b. 50 Newtons in the adult's direction
If you need to move a 50 kg box and a 100 kg refrigerator at the same speed, which statement is true?
a. Both objects require the same force
b. The refrigerator requires more force
c. The box requires more force
d. Mass has no effect on the force required
b. The refrigerator requires more force
2. When a car's mass remains constant but experiences a sudden change in acceleration (like during braking), what happens to the force?
a. The force remains constant
b. The force changes proportionally to the acceleration change
c. The force decreases regardless of acceleration
d. The force is unaffected by acceleration changes
b. The force changes proportionally to the acceleration change
3. What is the primary relationship between force and acceleration?
a. Force and acceleration are inversely proportional
b. Force has no effect on acceleration
c. Force and acceleration are directly proportional
d. Force only affects velocity, not acceleration
c. Force and acceleration are directly proportional
If a force of 250 N causes an object to accelerate at 5 m/s², what is the object's mass?
Answer: 50 kg
Explanation: Rearrange the equation to solve for mass:
m=F/a
m= 250N/ 5m/s2
m= 50kg
So, the object's mass is 50 kg.
When forces acting on a cart are perfectly balanced, what happens to the cart's motion?
a. It accelerates forward
b. It maintains its current state of motion
c. It moves in random directions
d. It always comes to a stop
b. It maintains its current state of motion
What is acceleration defined as in the context of motion?
a. Only the increase in speed of an object
b. Only the decrease in speed of an object
c. Any change in motion, including speed or direction changes
d. The force required to move an object
c. Any change in motion, including speed or direction changes
A car traveling at a constant speed of 60 mph is:
a. Experiencing positive acceleration
b. Not accelerating
c. Experiencing negative acceleration
d. Accelerating in multiple directions
b. Not accelerating
Using Newton's Second Law (F = ma), what force is needed to accelerate a 66 kg skier at 2 m/s²?
Answer: 132 N
EXPLANATION: F=66kg×2m/s2
F=132 N
So, the force required is 132 N.
A bowling ball rolled with a force of 15 N accelerates at 3 m/s². What is its mass?
Answer: 5 kg
Explanation: Rearrange the equation to solve for mass:
m=F/a
m= 15N/ 3m/s2
m= 5kg
So, the object's mass is 5 kg.
If a child exerting 50 Newtons pulls east while two teenagers pulling west exert 200 Newtons total, what is the net force and direction?
a. 250 Newtons east
b. 150 Newtons west
c. 50 Newtons east
d. 0 Newtons
b. 150 Newtons west
Which relationship correctly describes Newton's Second Law?
a. Greater mass requires less force to accelerate
b. Force has no effect on acceleration
c. Force and acceleration are inversely related
d. Greater force leads to greater acceleration
d. Greater force leads to greater acceleration
The total stopping distance of a vehicle includes:
a. Only the braking distance
b. Reaction distance and acceleration distance
c. Reaction distance and braking distance
d. Only the reaction distance
c. Reaction distance and braking distance
A 50 kg object is pushed with a force of 500 Newtons. What is its acceleration?
Answer: 10 m/s²
EXPLANATION: a=mF
Now, substitute the known values:
a=500N/50 kg
a=10 m/s2
So, the acceleration is 10 m/s².
A 1000 kg elevator is falling freely. What is the force acting on it due to gravity (g = 9.8 m/s²)?
Answer: 9800 N
Explanation: F=mg
F=1000kg×9.8m/s2
F=9800 N
So, the force acting on the elevator due to gravity is 9800 N.
Which combination of people would not create balanced forces if pulling equally on opposite sides?ADULT= 150N TEENAGER=100N CHILD=50N
a. One adult vs. three children
b. Two teenagers vs. one adult
c. Four children vs. two teenagers
d. One teenager vs. two children
b. Two teenagers vs. one adult
When a box is moving at a constant speed on the simulation, what can be concluded?
a. No forces are acting on the box
When a box is moving at a constant speed on the simulation, what can be concluded?
a. No forces are acting on the box
b. The forces acting on the box are balanced
c. The box must eventually stop
d. More force needs to be continually added
b. The forces acting on the box are balanced
At what speed does the braking distance first exceed 200 feet?
a. 60 mph
b. 80 mph
c. 70 mph
d. 50 mph
C. 70 mph