Force and Motion 1
Force and Motion 2
Force and Motion 3
Force and Motion 4
Force and Motion 5
100
If these boys are pulling with the same amount of force. What will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
Both will fall down.
They will not move at all.
100
Combined forces that act upon an object.
What is Net force?
100
What pulls a ball back to earth?
Gas
Gravity
Friction
Molecules
Gravity
100
A ball rolling down a hill is an example of which Newton’s Law of Motion?
1st Law, Inertia
100
What are two examples of forces?
Art and Music
A push or pull
A stand or ground
The dark side and the light side
A push or pull
200
Which of the following statements are true?
Balanced forces cause a change in motion.
Unbalanced forces cause a change in motion.
Forces do not effect the change in motion.
Unbalanced forces cause a change in motion.
200
The creator of the Laws of Motion?
Issac Newton
200
The force of gravity on the surface of Mercury is much less than on Earth. A rock has a weight of 100
newtons on Earth. What do you know about the weight of the rock on Mercury?
A. The rock will weigh exactly 100 Newtons.
B. The rock will weigh more than 100 Newtons.
C. The rock will weigh less than 100 Newtons.
D. There is not enough information to know if the rock weighs the same, more, or less on Mercury.
C. The rock will weigh less than 100 Newtons.
200
The force that acts directly against the direction of motion.
What is friction?
200
18. Calculate the net force and select the description that describes the movement of the vase.
A. The vase will move up.
B. The vase will move to the right.
C. The vase will not move.
D. The vase will move down.
C. The vase will not move
Net force = 0
*All the forces are equal and are pulling in opposite directions, which also makes them balanced forces.
*Force is a push or pull, and has a unit of a Newton (N)
300
D. A 10 N force applied to a stationary wall.
300
3. Suppose a rollerblade racer finished a 145 meter race in 20 seconds. What is the average speed of the
racer? Round your answer to the nearest hundredths place.
Speed=Distance/Time
7.25 m/s
Speed= 145m/20s
300
Which object would require the most force to move?
a tennis ball
a baby
a car
a cell phone
car
300
Which surface would be easier to roller-skate on?
The football field or the inside of the classroom.
The classroom because the floor will have less friction.
300
What describes how fast an object is moving?
Speed
400
What is a push or pull exerted on an object in order to change the objects position.
What is Force?
400
A change in a moving objects speed or direction is...
What is acceleration?
400
Force = mass x acceleration is..
Newtons 2nd Law of Motion
force (N)
mass (kg)
acceleration m/s/s
400
Objects in motion tend to stay in motion and objects at rest remain at rest unless......
Unless acted on by a force,
400
Sara and Sam went for a two hour drive. According to the graph, between 0.75 hours and 1.25 hours,
they -
A. Slowed down to a speed of 15 km/hr.
B. Travelled at a constant speed of 30 km/hr.
C. Were not moving since there was no change in position.
D. Turned around to go home but their speed remained constant.
C. Were not moving since there was no change in position
500
Which statement best explains why the person and the raft moved in opposite directions?
A. Second law of motion
B. Action and reaction forces
C. Person wanted the raft to move
D. Force is the product of mass and acceleration
B. Action and reaction forces
500
This graph shows the acceleration of a racehorse taking off from the starting gate. By how much did the
horse’s speed increase between 4 seconds and 6 seconds?
A. 20 m/s
B. 27 m/s
C. 45 m/s
D. 65 m/s
B. 27 m/s
500
A roller coaster is traveling 2 m/s at the top of the track. At the bottom of the track, 3 seconds later, it is
traveling 40 m/s. What is the average acceleration? Round your answer to the nearest hundredths
place.
7.6 m/s2
a=(40 m/s-2m/s)/(5s)
500
During Science class, Ben and Dylan had to set up a demonstration to model one of Newton’s laws.
This is a photo of their demonstration. When Ben hit the index card with his finger, the penny fell into
the cup. What does the students’ demonstration illustrate?
A. A force causes a change in velocity and likewise a change in velocity generates a force. 2nd
Law of Motion
B. An object subjected to an external force will accelerate and that the amount of the acceleration
is proportional to the size of the force. 2nd Law of Motion
C. An object at rest stays at rest and an object in motion stays in motion at the same speed and in
the same direction unless acted upon by an unbalanced force. 1st Law of Motion
D. For every action in nature there is an equal and opposite reaction. In other words, if object A
exerts a force on object B, then object B also exerts an equal force on object A. 3rd Law of Motion
C. An object at rest stays at rest and an object in motion stays in motion at the same speed and in
the same direction unless acted upon by an unbalanced force. 1st Law of Motion
500
Rowing a boat is which one of Newton’s Laws of Motion?
Newton’s 3rd Law , Action-Reaction