38 questions
What is Newton's 2nd law of motion?
What goes up must come down
For every action there is an equal and opposite reaction
Force equals mass times acceleration
An object in motion stays in motion unless acted on by an unbalanced force
A sprinter with a mass of 70kg accelerates at a rate of 5m/s2 . What force is the sprinter exerting?
F= 1,000 N
F=14 N
F= 350 N
F=65 N
Which law does this balloon represent?
1st law of motion
2nd law of motion
3rd law of motion
Law of Inertia
What is Newton's 3rd law of motion??
An object in motion stays in motion unless acted on by an unbalanced force
What goes up must come down
For every action, there is an equal and opposite reaction
Force equals mass multiplied by acceleration
What is force measured in?
Newtons
m/s2
Grams
MPH
How are speed and velocity different?
Speed included direction
Speed is always constant
Velocity is always constant
Velocity includes direction
What is the speed of an object that travels 20 meters in 4 seconds?
80 m/s
0.2 m/s
5 m/s
16 m/s
Which of Newtons law does this picture represent? (Hint: the car stopped and the man continued to move forward)
Newtons 2nd law
Law of gravity
Newtons 1st law
Newtons 5th law
What is speed?
how far you go
distance traveled in a certain amount of time
how fast you accelerate
the change in the location of a object
Find the velocity of a plane that traveled 3000 miles west in 5 hours.
65 mph west
600 mph
600 mph west
65 mph
The greater the mass of an object, _____.
the easier the object starts moving
the greater its inertia
the more balanced it is
the less force
The force that one surface exerts on another when the two objects slide against each other is called
friction
inertia
acceleration
gravity
According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail
creates a friction with the hammer.
disappears into the wood.
exerts an equal and opposite force on the hammer.
moves at a constant speed.
The overall force on an object after all the forces are added together is called the
balanced force
unbalanced force
net force
centripetal force
Define the term inertia.
the amount of matter in an object
the amount of space an object takes up
the tendency of an object to resist a change in motion, determined by mass
The force that one surface exerts on another when the two rub against each other
If we drop a steel ball and a ping pong ball, which would hit the ground first?
the steel ball because it has more mass
the ping pong ball because it takes longer to accelerate
they hit the ground at the same time
the steel ball because more gravity is acting on it
The force of __________________ is a type of friction that works against the motion of falling objects.
Terminal Velocity
Gravity
Free Fall
Air Resistance
These forces are...
Balanced
Unbalanced
The net force =_______
20 N ←
0 N
80 N
20 N →
What is the net force?
40 N ←
0 N Balalnced
20 N →
40 N →
Calculate the Net Force.
60 N →
40 N →
0 N
60 N ←
Friction is a force that acts in the ___________ direction of movement.
same
opposite
parallel
west
What type of friction occurs when the object is not moving?
static
sliding
fluid
rolling
Which is an example of a non-contact force?
air resistance force
friction force
applied force
gravitational force
Displacement is the distance combined with
direction
speed
velocity
magnitude
Bill runs 400 meters west to Andy's house, turns around, and runs 400 meters back home. What is Bill's distance?
0 meters
400 meters west
800 meters
1600 meters
Bill runs 400 meters west to Andy's house, turns around, and runs 400 meters back home. What is Bill's displacement?
0 meters
400 meters west
800 meters
1600 meters
An object is accelerating if it is______.
increasing speed
decreasing speed
changing direction
all of the above
David walks 3 km north to wawa and then another 4 km North to his friends houses. What is the displacement?
7 km North
3 km North
7 km
3 km
All forces are always described by what?
Strength and speed
Direction and shape
Strength and direction
Mass and shape
Which law is also called the law of inertia?
1st law of motion
2nd law of motion
3rd law of motion
None of them
To increase air resistance you must _____.
Increase surface area
Increase mass of the object
Decrease surface area
Decrease the mass of the object
How prepared do you feel for the test?
I can take it right now!! 😀
I'm confident just need to review material 🙂
I really need to study, but will be ready 😐
I'm not ready at all 😔