Kinematics
If a student theorizes that the acceleration due to gravity varies with horizontal distance traveled by a projectile, how might they test this theory using standard laboratory equipment?
Suspend weights from springs of varying stiffness and observe period of oscillation.
Measure the horizontal and vertical displacement of projectiles launched at various speeds and calculate gravitational acceleration from the parabolic trajectory.
Use a ramp to roll balls at different angles and measure final velocity after leaving the ramp.
Drop objects of different masses from the same height and record time taken to hit the ground.
What would be the final displacement after t seconds if an object starts from rest and accelerates uniformly at a m/s^2?
0.25at^2 meter
1at^2 meters
0.5at^2 meters
2at^2 meters
A particle travels on a straight path with its velocity changing at time intervals. How does acceleration relate to velocity in this type of motion?
Acceleration is constant regardless of temporal changes in the velocity.
Acceleration is mutually exclusive from velocity as it is dependent on external forces only.
Acceleration is determined by the path length traveled, not the changes in velocity.
The acceleration is the rate of change of velocity over time intervals.
What does Newton's First Law, also known as the law of inertia, state about an object in motion?
An object's acceleration is directly proportional to the net force acting on it and inversely proportional to its mass.
An object in motion will come to a stop unless continuously pushed or pulled.
An object at rest stays at rest until a net force causes it to move.
An object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
In projectile motion, which approximation might most likely cause a noticeable discrepancy between theoretical and actual range at high velocities?
Using an average velocity instead of instantaneous velocity.
Assuming constant mass throughout flight.
Neglecting air resistance.
Rounding gravitational acceleration to two decimal places.
If two objects have equal mass, but one object has twice the velocity of the other, how does their linear momentum compare?
The faster object has half the linear momentum.
The faster object has twice the linear momentum.
If an object falls freely near the surface of Earth, ignoring air resistance, it will accelerate downwards at approximately what value?
19.6 m/s^2
9.8 m/s^2
4.9 m/s^2
9.8 m/s

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What unit is used to express displacement or distance traveled by an object?
Kilograms (kg)
Newtons (N)
Meters (m)
Seconds (s)
When analyzing the motion of a bullet fired from a gun, how might the simplification of the bullet's motion affect the accuracy of its predicted impact point?
Treating the bullet as a point mass rather than accounting for its shape and rotation
Assuming air resistance uniform throughout the path
Assuming perfectly linear trajectory without any deviations
Assuming immediate reach of full speed upon exiting the gun barrel
What is the SI unit of impulse?
Joule (J)
Kilogram-meter per second squared (kg·m/s²)
Meter per second (m/s)
Newton-second (Ns)