Motion
A train moves straight down the track at a steady speed. What type of motion is this?
Linear Motion
You push a shopping cart across a store. What is the push you apply called?
Force
A student lifts a backpack. What ability are they using to do this work?
Energy
When you turn on a flashlight, what energy transformation occurs? (Hint: theres 3)
Chemical → electrical → light
A soccer ball is kicked across the field. What formula would you use to calculate its kinetic energy?
K.E.=1/2mv2
A playground swing moves back and forth in a regular pattern. What type of motion is this?
Periodic Motion
When you drop your phone, it falls to the ground. What force causes this?
Gravity
A skateboarder moving down the street has what type of energy?
Kinetic Energy
When you eat food and go for a run, what energy transformation is happening?
Chemical → kinetic
A 2 kg soccer ball is kicked at 3 m/s. What is its kinetic energy?
KE = ½(2)(3²) = 9 J
A ceiling fan spins in place along a fixed axis. What type of motion is being shown?
Rotational
You try sliding a heavy box across the floor and it slows down. What force is resisting the motion?
A book sitting on a high shelf has what type of energy?
Potential Energy
A roller coaster sits at the top of a tall hill before dropping. What type of energy does it mostly have?
Gravitational Potential Energy
A hiker stands on a 10 m cliff. What formula would you use to calculate their gravitational potential energy?
PE=mgh
Circular Motion
A hockey puck slides across ice at constant speed after being hit. What can you say about the forces acting on it? Think balanced or unbalanced
They are unbalanced (puck is moving)
A phone battery stores energy used to power apps. What unit would scientists use to measure that energy?
Joules (J)
As the roller coaster speeds down the hill, what energy transformation occurs?
Potential → kinetic
A 5 kg backpack is lifted onto a 2 m high table. What is its potential energy? (g = 9.8 m/s²)
PE = 5 × 9.8 × 2 = 98 J
A Ferris wheel rotates while a rider moves in a circular path around the center. What TWO types of motion describe this situation?
Rotational motion and circular motion
n tug-of-war, one team pulls with 12 N to the left and the other with 9 N to the right. What is the net force and direction?
3 N to the left
A campfire gives off two forms of energy. Name these TWO forms of energy being released.
Thermal (heat) and Radiant (light) energy
A car engine converts gasoline into motion, but also produces heat. Why isn’t energy “lost”?
Energy is conserved—it changes into other forms like heat and sound
A 4 kg bowling ball rolls down the lane with 200 J of kinetic energy. What is its velocity?
200 = ½(4)(v²)
200 = 2v²
v² = 100
v = 10 m/s