WorksheetsForce and Motion STAAR Review
Total questions: 46
Worksheet time: 1hrs 26mins
A steel ball is at one end of the box that is moving forward as shown. The box suddenly stops. According to (a) , the steel ball keeps rolling AFTER the box stops because of inertia. The ball continues rolling forward at the SAME speed.
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when box cars apply their brakes at the same time in order to stop?
The car with the smaller mass will require less force to stop than the car with the larger mass.
The car with the larger mass will maintain its velocity while traveling down the hill.
The car with the smaller mass will take longer to stop than the car with the larger mass.
The car with the larger mass will have less inertia than the car with the smaller mass.
During a demonstration of Newton's laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into the plastic cup as shown in Figure 2.
Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
The coin was at rest until the card was removed, so it stayed in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
Match the following definitions with the right Newton's Law of Motion
Newton's 1st Law
An object at rest will stay in its current motion unless an outside force acts upon it.
Newton's 2nd Law
Force = (mass)x(acceleration)
Newton's 3rd Law
For every action, there is an equal and opposite reaction.
A student inflates a balloon attached to a plastic straw. A string is threaded through the straw and tied to opposite ends of the room. When the air in the balloon is released, the balloon travels the length of the string. Which of Newton's laws explain this?
The law of action-reaction
Newton's law of magnetism
The law of force and acceleration
The law of gravity
According to Newton's 2nd Law, the acceleration of an object depends on the net (a) acting upon the object and the (b) (or amount of matter) the object has.
According to Newton's 3rd Law, forces occur in (a) . The (b) force is the fuel burning and shooting down, while the (c) force is the rocket moving upward with an (d) and opposite force.
According to Newton's 1st Law, an object in motion will (a) , and an object at rest will remain at rest, UNLESS an (b) force acts upon it to change its velocity.
A student inflates a balloon attached to a plastic straw. A string is threaded through the straw and tied to opposite ends of the room. When the air in the balloon is released, the balloon travels the length of the string. Which of Newton's laws explain this?
The law of action-reaction
Newton's law of magnetism
The law of force and acceleration
The law of gravity
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
The car with the smaller mass will require less force to stop than the car with the larger mass
The car with the larger mass will maintain tis velocity while traveling down a hill
The car with the smaller mass will take longer to stop than the car with the larger mass
The car with the larger mass will have less inertia than the car with the smaller mass
The masses of four vehicles and the net forces acting on them as they enter a highway are recorded in the table below. Which vehicle has the greatest acceleration as it enters the highway? (a)
What force is required to cause a 5-kg bowling ball to accelerate at 4 m/s2? Make sure to write the unit
(a)
During a demonstration of Newton's laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into the plastic cup as shown in Figure 2.
Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
The coin was at rest until the card was removed, so it stayed in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
Sometimes tectonic plates do not move easily past one another, and the plates become stuck. Forces build up, and when the plates finally move, tension is released, as shown below. The sudden movement of the plates is caused by - (a)
Match the following Net forces & direction of movement
300N left
300N right
0N
700N right
200N right
900N right
100N up
50N down
50N up
25N left
25N left
30N right
20N left
15N up
25N down
15N right
15N left
10N down
NASA's space shuttle program was active from 1981 until 2011. The photograph shows rockets carrying a space shuttle off the launchpad.
How can Newton's law of action-reaction best be applied to explain the movement of a rocket?
As the fuel burns, gases push against the rocket, moving it upward
As the fuel burns, gases move out of the rocket and reduce air resistance
As the fuel burns, the mass of the rocket decreases
As the fuel burns, the rocket moves faster
Fault block mountains
Mid Atlantic Ridge
San Andreas Fault, CA
ptential energy builds up in faults before an earthquake
Shear stress causes rocks to deform
Compression leads to folding of rock layers
Formation of rift valleys due to tensional forces
underwater volcanoes
younger ocean crust in middle of ocean
new crust is formed
Iceland
Formation of volcanic arcs due to the sinking of oceanic plates beneath continental plates
Deep ocean trenches are formed due to the subduction of oceanic plates
Earthquakes are common along subduction zones
Subducted oceanic crust melts and forms magma chambers
Island arcs are created by the volcanic activity associated with subduction
Collision of tectonic plates leads to uplift of land
Formation of fold mountains due to converging plates
Plates collide and push each other up
In a crash test dummy, the model flies forward after a sudden stop because it has-
inertia
a forward motion
a backwards motion
balanced forces
Arrange the descriptions according to the best category they belong to-
distance/time
change in velocity
speed in a given direction
not a vector
vector with magnitude of direction
vector with magnitude of changing direction
rate of change of position
scalar quantity
measured in meters per second
does not have direction
instantaneous speed
rate of change of velocity
measured in meters per second squared
10 mph
forward motion 10 mph
Which of the following is NOT an example of acceleration?
changing speed
changing direction
constant speed in a straight line
constant speed in a circle
What is the acceleration of the 25 kg box that has 50 N of force applied to the right?
(Use the F=m(a) triangle)
Which of the following is also known as Newton's 1st Law of Motion?
The law of unbalanced forces
The law of force and acceleration
The law of Inertia
The law of opposites
Newton's 3rd law of motion states that (a) forces balance each other.
Match the following chemical formulas with descriptions
2CH4
two molecules of methane
NaCl
one molecule of salt
3H2O
three molecules of water
CO2
one molecule of carbon dioxide
C6H12O6
glucose molecule
What happens to an object when the net force acting on it is zero?
It moves at a constant velocity
It accelerates
It disappears
It changes shape
What is the main difference between speed and velocity?
Speed is a vector quantity, while velocity is not
Velocity includes direction, while speed does not
Speed can be negative, while velocity cannot
There is no difference
Which of the following scenarios involves friction?
A ball rolling on a smooth floor
A fish swimming in water
A leaf falling off of a tree
Label: Northern Hemisphere
If you have a block that is 50g and has a of volume is 5 ml. What is the density?
50 g
10 g/ml
5 ml
Select ALL the correct information. Choose Three
Is this Balanced or Unbalanced? What is the Net Force? What is the Direction of the Force?
left
right
250N
1250N
unbalanced
Select ALL the correct information. Choose Three
Is this Balanced or Unbalanced? What is the Net Force? What is the Direction of the Force?
no direction
left
balanced
unbalanced
0N
Match the correct example with the law it matches with
When an object is at rest it will stay at rest until a force acts upon it.
Newton's 1st law
A crate getting pushed.
Newton's 2nd law
Every action has an equal and opposite reaction.
Newton's 3rd law
Which of the following identifies the energy transformation represented by the car?
(a) ---> (b) ---> (c)
Match the following definitions with the right Newton's Law of Motion
Newton's 1st Law
An object at rest will stay in its current motion unless an outside force acts upon it.
Newton's 2nd Law
Force = (mass)x(acceleration)
Newton's 3rd Law
For every action, there is an equal and opposite reaction.
Match the following Law of motion with the correct example
Newton's 1st law of motion
Roll a ball across smooth/rough surfaces. The ball rolls faster on smooth because less fiction
Newton's 2nd law of motion
Hit a ball with 2 different forces, the ball will have greater acceleration due to larger force
Newton's 3rd of motion
Bouncing the ball on the court is the action, the floor pushing the ball back up is the reaction
SPEED/VELOCITY/ACCELERATION: Speed is the (a) and object travels over a given period of (b) . Speed does not account for (c) . (d) is the speed and object travels in a specific direction.
Acceleration in the (e) in displacement such as speeding up, slowing down, or changing direction.
Drag the scenario to the correct category
A snail moving 10 miles per hour.
Speed in a given direction.
Turning a corner on a bike.
Flying 350 miles per hour West.
Slowing down at a stop sign.
The distance an object travels per unit of time.
Force is known as a push or a pull.
When the forces acting on an object are equal, the forces are considered (a) . This means the object has (b) and the object has (c) or constant motion.
When the forces acting on an object are not equal, the forces are considered to be (d) . This means the object (e) in a specific direction with a specific amount of net force.
Identify whether the object’s forces are balanced or unbalanced. Drag them to the correct category.
Law of Inertia
Law of Force and Acceleration
Law of Action and Reaction
An object at rest stays at rest.
Bigger and heavier things don’t move as fast or as far as smaller, lighter things.
Forces act in pairs.
The “LAZY” Law
An attempt is made to dislodge ketchup from the bottom of the ketchup bottle. The bottle is turned upside down, quickly pushed with a strong force in a downward motion, and then stopped. The ketchup immediately moves to the opposite end of the bottle. This scenario is an example of Newton's
law of force and acceleration
law of magnetism
law of inertia
law of gravity
Match the following variables with their units
Speed
m/s or mph
Acceleration
m/s^2
Distance
m
Time
s
Force
N
