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.
Net force
100
What pulls a ball back to earth?
Gas
Gravity
Friction
Molecules
Gravity
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.
C. The rock will weigh less than 100 Newtons.
200
The force that acts directly against the direction of motion.
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.
Force?
400
What is acceleration?
A change in a moving objects speed or direction is
400
Force = mass x acceleration
How do you label these ?
force (N)
mass (kg)
acceleration m/s/s
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
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