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WorksheetsForces and Motion Review
Total questions: 57
Worksheet time: 34mins
Forces that are equal in size and opposite in direction and do not cause a change in motion are called?
Balanced Forces
Unbalanced Forces
How can you tell an unbalanced force is acting on an object?
The object is not moving.
The object is moving.
The object is at rest.
The tendency of an object to resist a change in motion is called?
Inertia
Friction
Gravity
This force pulls things down?
Inertia
gravity
friction
These forces are unequal and cause motion?
balanced forces
unbalanced forces
What direction will this box move.
North East
North West
South East
South West
What direction will this box move.
North East
North West
South East
South West
Calculate the net force and direction.
7
7N
7N to the left
7N to the right
A soccer ball laying motionless will
stay at rest unless a force causes a change in motion.
moves in the direction of the goal.
accelerates.
moves in the direction of the player.
Who will win?
The blue team with a net force of 300 N.
The green team with a net force of 300 N.
The green team with a net force of 200 N.
The blue team with a net force of 300 N.
What two measurements do you need to calculate speed?
magnitude & direction
distance & time
speed and time
acceleration & time
Two toys roll down the hill, a metal car (100g) and a plastic car (50g). Which will win first?
The plastic car
The metal Car
Both will finish at the same time
Two toys roll down the hill, a metal car (100g) and a plastic car (100g). Which will win first?
The plastic car
The metal car
Both will finish at the same time.
Two toys roll down the hill, a metal car (50g) and a plastic car (100g). Which will win first?
The plastic car
The metal car
Both will finish at the same time.
A force is
any object that has power
pushes or pulls on objects that put these objects into motion.
an object that is not in motion
Forces are measured in what unit?
Newtons
Kilograms
Meters
Friction is...
the pull of gravity on the object’s mass.
the force that pushes or pulls an object.
a force created by a surface on an object that moves over it
If the friction force on an object is reduced,
the object will move slower.
the object will move faster.
An object with a mass of 100 kg is moving at 5 m/s. How you might speed it up?
Increase the object's mass.
Decrease the object's mass.
When a surface becomes rougher, the force of friction acting on a moving object will_______________.
increase
decrease
stay the same
Balanced forces have a net force of ______, while unbalanced forces have a net force of _________.
0, >0
>0, 0
Which is more difficult to stop quickly?
Small car
Semi truck
Bike
Skateboard
If two people are arm wrestling and there is a tie, this means...
the net force is zero.
the net force is positive.
there are no forces acting upon the arms.
The force that pulls everyone down to Earth is called_______.
Inertia
Gravity
Friction
By smoothing a surface (example: waxing a floor), you __________________.
increase the friction
decrease the friction
On a speed graph, the more steep the slope is, the _____________________________.
slower the speed
faster the speed
no change in speed
What two things determine the gravity of an object?
mass & weight
mass & distance
density & mass
volume & distance
Which is a use of air resistance?
swimming in a pool
opening a parachute
falling asleep
going to the moon
What keeps the planets in orbit around the sun?
gravity
friction
density
distance
When NASA scientists send a man into outer space in a rocket, what force must the rocket overcome as it leaves the Earth's surface?
weight
mass
gravity
density
When will the forces of gravity between two objects be the GREATEST?
when the masses of both objects are small and the objects are far apart
when the masses of both objects are large and the objects are close together
when the masses of both objects are small and the objects are close together
when the masses of both objects are large and the objects are far apart
When will the gravity between two objects be the LEAST?
when the masses of both objects is small and the objects are close together
when the masses of both objects is small and the objects are far apart
when the masses of both objects is large and the objects are close together
when the masses of both objects is large and the objects are far apart
A boy throws a baseball up in the air. Why does the baseball fall back down to the ground?
the mass of the baseball decreases, causing it to fall
the weight of the ball causes the ball to fall
the force of gravity causes the ball to fall
the density of the ball causes the ball to fall
Which statement about gravity is true?
gravity causes objects to pull towards one another
gravity causes objects to push away from each other
gravity only takes place between planets
the moon doesn't have any gravity
Every magnet has a:
East and West pole
North and South pole
East and South pole
North and West pole
Chicago and Saint pole
The entire region surrounding a magnet is known as the:
Magnetic Domain
Lodestone
A Compass
Magnetic Field
a push or pull between two charged objects
electric force
electrical circuit
static electricity
electric discharge
push apart
attract
repel
objects with like charges will...
attract
repel
Objects with unlike charges will...
repel
attract
