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Worksheets05 Newton's 2nd Law
Total questions: 50
Worksheet time: 29mins
What is the formula for calculating Force?
F=ma
a=F/m
m=Fa
F=m/a
What is the formula for calculating acceleration?
a=F/m
F=ma
a=Fm
F=m/a
If I apply the same force to a ping pong ball and a bowling ball, which one will accelerate farther and faster?
ping pong ball
bowling ball
I have no idea
What two variables define force?
speed and velocity
mass and acceleration
mass and velocity
distance and time
For this question, refer to the image to the left...
The larger the ___________ of an object, the greater the ____________ needed to change the direction or the speed.
mass / tow truck
suitcases / force
mass / force
windows / force
What is the formula for the 2nd law of motion?
a = lw
F = mama
F = ma
F = llama
Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?
The mass of the car is greater than the mass of the basketballs
The mass of the bowling balls is greater than the mass of the basketballs
The van with the basketballs is bigger than the van with the bowling balls
It should be equally as hard to push the two vans
If the man pushes with an equal amount of force, which object will accelerate more?
Car because it has more mass
Lawnmower because it has less mass
Car because it has less mass
Lawnmower because it has more mass
According to Newton's second law of motion, if a rigid body of unchanging mass is observed accelerating, what must be happening?
A force was once applied but is now not being applied.
The mass must be changing.
Unbalanced forces act "all crazy!!!" on an object.
A force is being applied to the mass.
An object is falling downward through Earth's atmosphere. In which direction is the air resistance force?
Down
Up
Around the object
Through the object
When a falling object stops accelerating and falls at a constant speed, it is
fluency
constant velocity
acceleration
terminal velocity
If you jump out of an airplane, which two forces are acting on you?
Gravity and friction
Force and gravity
Gravity and Air Resistance
When you drop a hammer and a feather on the moon what will happen? There is no air on the moon.
They will hit at the same time
The hammer will hit first
The feather will hit first
If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by
its rate depends on its initial speed
about 15 m/s
about 10 m/s
about 5 m/s
A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on Earth. What happens?
Bowling ball hits the ground first
Bag of chips hits the ground first
Both items will hit the ground at the same time
A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on the Moon. There is no air on the Moon. What happens?
Bag of chips hits the surface first
Bowling ball hits the surface first
Both hit the surface at the same time
Which of these animals would probably cause the greatest pressure on the ground?
A large cow with big feet
A large cow with small feet
A calf with big feet
A calf with small feet
Friction is a force that __________ motion.
opposes
promotes
increases
starts
Friction depends on _____ surfaces in contact.
1
2
3
4
You can represent the direction of force using a __________.
signal
vector
diagram
Sliding friction increases with __________.
weight
mass
density
True or False.
It is impossible to totally eliminate friction.
True
False
Select all of the ways to reduce friction.
lubricants
heat
cold
ball bearing
Friction changes kinetic energy (energy of motion) into __________ energy.
light
electric
heat
