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WorksheetsForces
Total questions: 36
Worksheet time: 13mins
Newton's First Law states that an object in motion stays in motion, and an object at rest ____________, unless acted upon by an unbalanced force.
accelerates
stays at rest
begins to move
enters a chaotic state
Force is a vector.
True.
False.
Acceleration is a...
vector.
scalar.
A pulling force usually associated with a rope or a string.
Tension
Spring force
Friction
Weight
The force of gravity acting on an object.
Tension
Spring force
Friction
Weight
A force that holds back the movement of an object sliding over a surface.
Tension
Spring force
Friction
Weight
The normal force always points perpendicular to the surface.
True.
False.
Select the matching situation.
A rocket accelerating during lift-off.
A monkey hanging from a rope.
A car being towed.
A book at rest on a table.
Select the matching situation.
A rocket accelerating during lift-off.
A monkey hanging from a rope.
A car being towed.
A book at rest on a table.
Select the matching situation.
A rocket accelerating during lift-off.
A monkey hanging from a rope.
A car being towed.
A book at rest on a table.
Select the matching situation.
A rocket accelerating during lift-off.
A monkey hanging from a rope.
A car being towed.
A book at rest on a table.
If an object is at equilibrium it means the acceleration is...
zero.
positive.
negative.
How much does a monkey (m = 5 kg) weigh on Earth?
w = - (5 kg)(9.8 m/s2)
w = - (0.01)(5 kg)(9.8 m/s2)sin(30o)
w = - (5 kg)
When you push a car, your force on the car is ________ the force of the car on you.
equal and opposite
greater than
less than
help I'm trapped inside the computer!
Weight always points...
up.
sideways.
toward the center of the planet.
it is constantly changing.
The reaction force of a book pushing on a table is...
the table pushing on the book.
the table pushing on the ground.
the book pushing on the table.
gravity pulling on the book.
A penguin (2 kg) is accelerated at a rate of 10 m/s2. What is the net force acting on the penguin?
20 N
40 N
80 N
160 N
The SI unit for force is called...
the newton.
the watt.
the ampere.
the gauss.
A 15,000 N force accelerates a spacecraft at a rate of 3 m/s2. What is the mass of the spacecraft?
1,000 kg
2,000 kg
5,000 kg
10,000 kg
The force of the Earth pulling on the Moon is equal and opposite to the force of the Moon pulling on the Earth.
True.
False.
If a gorilla and a small child played tug of war, who would exert a greater force on the other contestant?
The gorilla.
The toddler.
Neither would exert a greater force, the forces would be equal and opposite.
Mass is a...
scalar.
vector.
Weight is a...
scalar.
vector.
Tension is a...
scalar.
vector.
Friction is a...
scalar.
vector.
The coefficient of friction (μk) is a...
scalar.
vector.
When an object is moving at constant velocity, its acceleration is...
9.8 m/s2
0 m/s2
- 9.8 m/s2
4.9 m/s2
The net force on an object that is not accelerating is equal to...
100 N
0 N
mg
9.8 m/s2
Which of the following is the formula used to calculate friction?
fk = μkn
fk = μk
fk = 9.8
fk = v2/r
Kinetic friction points in the opposite direction of an object's velocity.
True
False
Newton's famous textbook, Philosophiae Naturalis Principia Mathematica, almost wasn't published because the Royal Society had spent its annual budget publishing a book about...
fish.
comets.
mega fauna.
microbes.
1 N of force is equal to...
1 kg m/s2
9.8 m/s2
1 kg m/s
1 m3/kg s2
What is true about an object in dynamic equilibrium?
velocity is not zero
acceleration is not zero
acceleration is zero
velocity is zero
What is true about an object in static equilibrium?
velocity is not zero
acceleration is not zero
acceleration is zero
velocity is zero
An elevator is being lifted up at constant speed by a steel cable. All frictional effects are negligible. What is true about the forces acting on the elevator?
The upward force from the cable is greater than the downward force of gravity.
The upward force from the cable is equal to the downward force of gravity.
The upward force from the cable is smaller than the downward force of gravity.
The elevator goes up because the cable is being shortened, not because an upward force is being applied by the cable.
A bowling ball accidentally falls out of the cargo bay of an airliner as it flies along in a horizontal direction. Which path would the bowling ball most closely follow, as observed by a person standing on the ground watching the plane fly by?
A
B
C
D
E
