Is gravity a push or a pull?
push
pull
neither
both
pull
What is the speed of a car that travels 30 km in 25 minutes?
1.2 km/min
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
What force moves an object away from you?
pull
push
gravity
Jedi force
push
More the weight, __________ the friction force.
Greater
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.
Which material should be used on a bicycle ramp to increase friction?
shiny metal
sand paper
smooth wood
sand paper
Which word means a change in position?
Speed
Motion
Direction
Force
Motion
What is described as an object's direction and speed?
Velocity
When a bowling ball hits bowling pins, explain what is happening to the bowling pins that cause them to move?
Energy from the bowling ball is transferred to the bowling pins.
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.
When an object changes its path of motion, it changes _____________.
speed
force
direction
direction
Is kicking a soccer ball a push or a pull?
push
pull
push
What describes how fast an object is moving?
Speed
Velocity is a measure of both ____ Speed is a measure of only____ something moves.
A. force and acceleration; how fast
B. force and direction; the direction
C. speed and direction; how fast
D. speed and force; the direction
C. Speed and direction; how fast
What is a push or pull exerted on an object in order to change the objects position.
What is Force?
Which object would require the most force to move?
an elephant
a train
a car
a computer
a train! Trains weigh up to 315,000 pounds!
What are combined forces that act upon an object called?
Net Forces
The force that opposes the motion of an object?
What is friction?
Which surface would be easier to roller-skate on?
The blacktop or the inside of the classroom.
The classroom because the floor will have less friction?
A pitcher throws a baseball to home plate in 0.50 seconds. The distance between the pitcher and home plate is approximately 18 m. Identify the formula for speed. What was the average speed of the baseball?
What is distance/time? The average speed is 3.6 m/s
A change in a moving object's speed or direction is...
What is acceleration?
If a particle moves from 4.5 meters at its highest point of travel to 1.5 meters at its lowest point of travel, how far does the particle actually travel?
3.0 meters
If you have two runners running a race, and runner 1 ran at a constant speed throughout the race and finished at a speed of 1.25 m/s, and runner 2 ran at a speed of .5 m/s then ended the race at a speed of 1.25 m/s, what does it say about the two runners?
A. The runners began the race at different times.
B. The runners took the same time to finish the race.
C. The runners ran the race on different tracks.
D. The runners returned to the starting point at the end of the race.
B. The runners took the same time to finish the race.
Objects in motion tend to stay in motion and objects at rest remain at rest unless......
Unless acted on by a force,