Which object has the greatest gravitational potential energy?
Physical Science
Question · Easy
The houseplant does both
Short
As a pendulum swings downward from its highest point toward the bottom of its arc, what happens to its energy?
A cart at the top of a ramp has 100 Joules of gravitational potential energy relative to the ground. Assuming no energy is lost to friction, what is its kinetic energy at the bottom of the ramp?
Question · Medium
The kinetic energy formula is KE = 1/2 * m * v^2. Which factor has the greatest effect on an object's kinetic energy if its value is doubled?
A bicyclist stops pedaling and coasts down a steep hill, speeding up as she travels downward. Which statement correctly describes the primary energy transformation?
Two identical toy cars are placed on two different ramps. Car A is at a height of 0.5 meters, while Car B is at a height of 1.0 meter. How does the potential energy of Car B compare to Car A?
An archer pulls back a bowstring and holds an arrow stationary before releasing it. What form of energy is stored in the bent bow and pulled string?
Question · Hard
What happens to a rolling soccer ball when a friction force acts in the direction opposite to its motion?
Two students push a heavy cardboard box across the floor in the same direction. Student A applies a force of 10 N and Student B applies a force of 15 N. What is the net force acting on the box?
A science textbook rests motionless on a classroom desk. Which two forces acting on the textbook are equal in magnitude and opposite in direction?
Student A pushes a crate to the right with a force of 40 N. At the same time, Student B pushes the crate to the left with a force of 25 N. What is the net force on the crate?
Which contact force always opposes the relative sliding motion between two surfaces touching each other?
A hockey puck slides across a frictionless ice rink at a constant speed of 12 m/s in a straight line. What is the net force acting on the hockey puck?
A skydiver falls toward the ground at terminal velocity (constant downward speed). Which statement best describes the forces acting on the skydiver?
Newton's First Law of Motion states that an object at rest will remain at rest unless acted upon by what?
According to Newton's Third Law of Motion, when a rocket engine exerts a strong downward action force on hot exhaust gases, what is the reaction force?
If an unbalanced net force of 12 Newtons acts on a 3 kilogram toy wagon, what is the acceleration of the wagon? (Use Newton's Second Law: F = m * a)
Inertia is the tendency of an object to resist changes in its state of motion. Which object has the greatest inertia?
When a city bus taps its brakes and stops suddenly, a standing passenger lurches forward. Which scientific concept explains why the passenger continues moving forward?
A student pushes a light plastic toy car and a heavy wooden block with the exact same pushing force of 5 N. Why does the toy car accelerate much faster than the wooden block?
A swimmer pushes backward against pool water with her hands. According to Newton's Third Law of Motion, what force propels the swimmer forward through the water?
What is the average speed of a track athlete who runs a distance of 100 meters in 20 seconds?
What is the fundamental difference between speed and velocity?
A family drives 150 miles North along Highway 17 in 3 hours. What is the average velocity of the car during the trip?
On a graph showing distance on the vertical axis (y) and time on the horizontal axis (x), what does a steep upward line represent?
A student walks 4 kilometers to school in 1 hour, spends 1 hour at lunch, and then walks 4 kilometers home in 2 hours. What was the student's average speed for the total 4-hour period?
A train travels at a constant speedometer reading of 60 km/h around a smooth circular track. Why is the train's velocity considered to be changing?
A distance-time graph shows a horizontal line parallel to the time axis. What is the speed of the object during this time interval?
Which property of a transverse wave measures the height of a crest above the resting (equilibrium) position?
Which wave property describes the number of wave crests that pass a fixed point in one second?
If the frequency of a wave increases while its speed remains constant in a uniform medium, what must happen to its wavelength?
Which labeled feature of a transverse wave represents the lowest point below the rest position?
High-amplitude sound waves carry more energy than low-amplitude sound waves. How is a high-amplitude sound wave perceived by human ears?
A water wave in a ripple tank has a wavelength of 4 meters and a frequency of 2 Hz. What is the speed of the wave? (Use wave speed equation: v = f * wavelength)
Which statement correctly compares mechanical waves (such as sound waves) and electromagnetic waves (such as visible light)?
According to cell theory, what is the fundamental structural and functional unit of all living organisms?
Life Science
Where do all new cells come from, according to cell theory?
Which English scientist observed thin slices of cork under an early compound microscope in 1665 and coined the term 'cell'?
Which statement is NOT one of the three main tenets of classical cell theory?
Why are viruses generally classified by scientists as non-living particles rather than living cellular organisms under cell theory?
A biologist isolates a microscopic single-celled organism from a pond. Under the microscope, she watches the single cell pinch in half to form two new identical daughter cells. Which pillar of cell theory does this directly support?
How did the invention and advancement of electron microscopes in the 20th century further solidify and refine cell theory?
Which organelle serves as the control center of a eukaryotic cell and houses its genetic material (DNA)?
Known as the 'powerhouse of the cell,' which organelle breaks down glucose to produce ATP energy during cellular respiration?
Tiny spherical organelles called ribosomes are found attached to the rough endoplasmic reticulum or floating in the cytoplasm. What is their primary function?
Which cell structure forms a flexible barrier around the cell and selectively regulates what substances enter and leave?
Which organelle acts like the 'post office' of the cell by modifying, sorting, and packaging proteins into vesicles for delivery?
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