Energy
Bobby, of mass m, and Sally, of mass 0.75m, slide down the same frictionless slide. Who has more kinetic energy at the bottom of the slide?
Sally
Bobby
They both have the same kinetic energy at the bottom of the slide.
It depends on the angle of the slide.
What would happen to the amount of work done by gravitational forces on an object dropping freely from rest, if its dropping distance were halved but its mass were doubled in anticipation of assessing work-energy principle?
The work done decreases by half following the shortening of the drop distance.
It doubles due to the increased mass of the object.
The work done would remain unchanged since both mass increases and distance decreases proportionally.
No direct conclusion can be drawn without additional information on velocity changes.
In a pendulum swing at its highest point, what kind of energy is at its maximum?
Kinetic energy
Gravitational potential energy
Thermal energy
Sound Energy
When an oscillating spring subject begins from rest and starts to compress, how does it store energy?
Elastic potential energy
Kinetic energy
Radial potential energy
Chemical energy
If a block slides down a frictionless inclined plane, then immediately enters a horizontal section with kinetic friction before coming to a stop, which factor would most significantly alter the block's final displacement?
The coefficient of kinetic friction between the block and the horizontal surface.
The angle of inclination of the plane.
The mass of the sliding block.
The height from which the block begins its descent.
A box slides across a horizontal surface with constant speed; what can be said about the net work done on the box?
It equals the weight of the box.
It's zero.
It increases over time.
It decreases as speed remains constant.
A 3kg block is situated on a ramp with a vertical height of 2m. What is the velocity of the block at the bottom of the ramp?
6.3 m/s
39.24 m/s
40 m/s
9.81 m/s

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If we modify a spring constant (k) experiment by using springs with quadruple stiffness while compressing them half as much as initially, how does it affect potential energy stored in the spring?
It quadruples along with spring stiffness.
It halves due to decreased compression distance.
It doubles.
It remains unchanged since one factor increases and another decreases proportionally.
In the context of finding the power output of a cyclist, what effect would doubling only the speed have on the power required to maintain that new speed?
Quadrupling.
No change.
Doubling.
Tripling.
Which expression describes power in terms of work done over time?