What goes up, must come down!
What unit of measure is force measured in?
NEWTONS
Define friction.
Friction is a special push-back force that happens when two things rub against each other. It causes resistance.
Define what an EQUAL FORCE is.
An equal force is when two or more pushes or pulls act on an object with the same strength going in opposite directions
Zayin pushes a toy car across the classroom floor. The car begins to move.
What caused the toy car to move?
Gravity / A push / Friction
A push
A student drops a basketball. Which force pulls the basketball toward the center of the Earth?
Friction/ Gravity/ Magnetism/ A push
Gravity
What tool is used to measure the amount of FORCE being used?
A SPRING SCALE is the tool that is used to measure the amount of force being used.
If a surface like sandpaper is ROUGH, does it have MORE FRICTION or LESS FRICTION?
MORE FRICTION
Define an unequal force.
An UNEQUAL FORCE is a push or pull on an object that is stronger in one direction than any forces pulling or pushing against it
A student releases two identical balls from different heights. Ball A is dropped from 1 meter, and Ball B is dropped from 2 meters. Which variable is the student changing?
The mass of the balls/ The force of gravity/
The height of the drop
The height of the drop
Two students push identical toy cars across the same smooth floor. Student A uses a gentle push. Student B uses a stronger push. What will most likely happen?
Student B's car will move faster at first.
Both cars will remain still.
Student A's car will always travel farther.
The stronger push will make the car heavier.
Student B's car will move faster at first.
A student uses a spring scale to pull a wagon. The scale reads 9N. What does this reading show on the scale?
The scale shows the pulling force of 9N.
If a surface like ice is SMOOTH, dies it have MORE FRICTION or LESS FRICTION?
Less Friction
When the ball sits on the grass, is this an equal or unequal force?
This is an equal force because the ball is not in movement.
A student pushes a toy car across three different surfaces using the same amount of force. Which surface will most likely cause the car to travel the shortest distance?
Smooth tile Polished Wood or Rough Carpet
Rough Carpet
A student throws a ball straight up into the air. The ball slows down, stops moving upward, and falls back to the ground.
Which force causes the ball to do this action?
Magnetism/ Friction/ Gravity
Gravity
A student uses a spring scale to pull a wooden block across a table. The spring scale reads 5 newtons. What is the spring scale measuring?
The mass of the block/ The force applied to pull the block/ The speed of the block
The force applied to pull the block
True or False: A water slide has MORE FRICTION.
FALSE
When your foot strikes a soccar ball, it introduces a large, directional push. Because this force is much greater than the opposing forces is this an equal force or unequal force and why?
A student investigates how different surfaces affect the distance a toy car travels. Which factor should the student keep the same to make the investigation fair?
The type of surface/ The starting position and release method of the car/ The distance traveled by the car
The starting position and release method of the car
Students create balloon rockets by attaching balloons to straws threaded onto strings. They inflate the balloons and release them without tying the ends. Air rushes out of the balloons, causing the rockets to move forward.
A student tests two balloon rockets.
Rocket A: Inflated with a small amount of air.
Rocket B: Inflated with a larger amount of air.
Both rockets use identical balloons and travel along the same type of string.
Which statement BEST explains why Rocket B may travel faster when released?
Rocket B has less gravity acting on it.
Rocket B has more friction acting on it.
Rocket B releases more air, producing a greater forward force.
Rocket B moves because the string pulls it forward.
Rocket B releases more air, producing a greater forward force.
A student places a magnet near four objects.
Which object will most likely be attracted to the magnet?
Plastic spoon/ iron paper clip/ wooden pencil
iron paper clip
True or False: A carpet has MORE FRICTION.
True
A student pushes an empty wagon and then pushes the same wagon filled with books. The student uses the same amount of force each time. Why will the wagon with books generally have less acceleration?
It has more mass/ It has less gravity/ It has no friction
It has more mass
A student rolls the same toy car across smooth tile, short grass, and Thick carpet using the same starting speed. On which surface will the car most likely travel the shortest distance?
Smooth tile/ short grass/thick carpet
thick carpet