Practice: physics

Energy an object has due to its motion

• Potential energy
• Kinetic energy
• Thermal energy
• Static energy

Motion of an object in two dimensions under the influence of gravity

• Newton's laws of motion
• Circular motion equations
• Gravitational acceleration equations
• Projectile motion equations

Work done by a force on an object causing a displacement

• Force x Distance
• Force + Distance
• Force / Distance
• Force - Distance

Energy an object possesses due to its position in a gravitational field

• Thermal energy
• Potential energy
• Kinetic energy
• Gravitational potential energy

Motion that occurs under the sole influence of gravity

• Free rise
• Gravity pull
• Weightless motion
• Free fall

In free fall, this is the force that affects the phenomenon in vacuum conditions:

• Weight

• buoyancy
• magnetism
• friction

The relationship between work and energy is:

• Energy is the result of work done on an object
• Work and energy are unrelated concepts
• Energy is the force applied to perform work
• Work is the transfer of energy that results from applying a force over a distance.

The potential energy of an object at the lowest point of its trajectory is:

• Half
• Zero
• Constant
• Negative

Why do roller coasters just have one big hill?

• Roller coasters have one big hill to reduce construction costs
• Roller coasters have one big hill because the potential energy gained from the initial lift hill is enough to propel the train through the rest of the track.
• Roller coasters have one big hill for aesthetic purposes
• Roller coasters have one big hill to conserve momentum

What happens to an object's kinetic energy if its speed is doubled?

• Halved
• Tripled
• Remains the same
• Quadrupled