Motion
Velocity is described by an objects __________ and ________.
Direction and Speed
Name 3 types of force
Gravity, friction, elasticity, electricity, and magnetism
Stored energy is...
Potential Energy
Kinetic Energy is described as _____
The energy of motion.
When you slide a book across the table, it eventually stops. Which of Newton’s Laws explains why the book doesn't keep moving forever?
The law of inertia (Newton’s First Law - this does not get you marks)
What is the force that occurs when matter rubs against matter?
Friction
Which has more potential energy in our classroom: the clock or the board eraser?
The clock
Which has more kinetic energy a fast ball thrown by Mr Ross, or an underhanded pitch thrown by Mr. Elsharif?
Fast ball by Mr Ross
You push a shopping cart and it accelerates. If you put more stuff in the cart, you have to push harder to get the same acceleration. Which law explains this?
The law of acceleration (Newton's second law - this does not get you the marks)
Speed equals ________ dived by ________ spent moving.
distance, time
What force allowed Ms. Meunier to throw a tennis ball up in the air, make it pause, and then return to her?
Gravity
The _________ an object is the more potential energy it has.
higher, heavier
All ______ objects have kinetic energy.
Moving
A rocket launches into the air by pushing exhaust gases downward. Which law explains how the rocket lifts off the ground?
The law of action-reaction (Newton's third law - this does not get you the marks)
What is the law of motion that causes an object to resist a change of its motion in either speed or direction.
Inertia
When friction occurs so does ________.
heat, thermal energy,
Where would a child have more potential energy at the top of a slide or at the bottom.
top
Which variable has more effect on Kinetic Energy?
Speed, Velocity
Two students push the same sled in opposite directions. Student A pushes with 20 N of force, and Student B with 40 N. According to Newton’s Laws, what will happen to the sled, and which law explains it? (do not need the name of the law)
The sled will accelerate in the direction of the greater force.
It will move towards student A.
Newton’s Second Law explains how the net force causes acceleration.
Unless acted on by a force objects in ________ tend to stay in _______, and objects in _____ tend to stay in _____.
motion, motion, rest, rest
what are the two components of any vector?
Magnitude and Direction
what is the rate of acceleration caused by gravity (mention units as well)
9.8m/s2
Which point on a roller coaster would the kinetic energy be the highest.
At the bottom of the highest hill.
Why do passengers jerk forward when a car suddenly stops, even though they’re wearing seatbelts? Which law explains this?
Newton’s First Law (Inertia –
the passengers want to keep moving forward until a force, like the seatbelt, stops them.)