Physics Projectile Motion Quiz

False (B)

At the highest point of its trajectory

<p>zero</p> Signup and view all the answers

<p>Draw a diagram = Visually represent the problem to understand the trajectory and given variables. Separate vertical and horizontal components = Resolve initial velocity into its x and y components using trigonometry. Horizontal movement = Apply kinematic equations with constant horizontal velocity (ax = 0). Vertical movement = Apply kinematic equations with constant vertical acceleration due to gravity.</p> Signup and view all the answers

<p>10 m/s (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>parabolic</p> Signup and view all the answers

<p>The object's speed is constant, but its velocity is changing. (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>12.5 m/s^2</p> Signup and view all the answers

<p>ωr</p> Signup and view all the answers

<p>Period (T) = Time taken for one complete revolution Frequency (f) = Number of rotations completed per second Angular Velocity ($ \omega $) = Rate of change of angular displacement Centripetal Acceleration ($a_c$) = Acceleration directed towards the center of the circle</p> Signup and view all the answers

<p>10 m/s (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>9.42 m/s</p> Signup and view all the answers

<p>Tension, gravitational force, and centripetal force (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The angle decreases.</p> Signup and view all the answers

<p>angle</p> Signup and view all the answers

<p>Centripetal Acceleration = $a_{c} = \frac{v^{2}}{r}$ Linear Velocity = $v = \frac{2\pi r}{T}$ Centripetal Force = $F_{c} = \frac{mv^{2}}{r}$ Angular Velocity = $\omega = \frac{\mathrm{\Delta}\theta}{t}$</p> Signup and view all the answers

<p>Greater possible speed without losing control (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>toward the center of the circle</p> Signup and view all the answers

<p>Gravitational Force (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>tan = v^2/rg</p> Signup and view all the answers

<p>constant</p> Signup and view all the answers

<p>Low Earth Orbit (LEO) = Short orbital period, lower altitude Geostationary Orbit (GEO) = Orbital period of 24 hours, high altitude Elliptical Orbit = Velocity is not constant</p> Signup and view all the answers

<p>Gravitational potential energy increases (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>v = (2GM/r)</p> Signup and view all the answers

<p>It eliminates the need for sideways friction (A)</p> Signup and view all the answers

<p>force</p> Signup and view all the answers

Any object thrown or projected into the air, moving freely without a power source.

The path a projectile follows, which is parabolic in shape.

Only the weight force (gravity) acts on it during motion.

Launch at an angle, requiring trigonometry to analyze horizontal and vertical velocities.

At the highest point, the vertical velocity is zero, only horizontal movement occurs.

In projectile motion, horizontal velocity remains constant without air resistance.

Accelerated by gravity at -9.8 m/s²; initial velocity is often zero.

The time for both horizontal and vertical motions is the same, depending on height and angle.

An object traveling in a circular path at constant speed with changing direction and acceleration.

T = 1/f or f = 1/T; T is the period, f is the frequency.

Average speed formula: v = 2πr/T, where r is radius and T is period.

Angular velocity measures the angle of rotation per time: ω = Δθ/t.

The formula v = ωr merges angular and instantaneous velocities.

A system for representing points in the plane using (r, θ), where r is radius and θ is angle in radians.

Acceleration towards the center of the circle; formula ac = v²/r.

A force that keeps an object moving in a circle, resulting from different forces acting in the system.

Angle for optimal turning of a vehicle, eliminating friction.

Turning movement of a force; product of distance and force.

Every object attracts every other object; gravity is always attractive.

Acceleration due to gravity at a location; 9.8 m/s² on Earth.

For objects in circular orbits, the gravitational force provides centripetal force.

Formula relating periods and radii of satellites orbiting the same body.

An object in a stable orbit around a central mass.

Speed needed to break free from a planet's gravitational pull.

Energy of an object due to its position in a gravitational field.

Velocity required for a stable orbit around a central mass.

The force required to keep an object moving in a circle, balancing gravity and normal force.

Fc = mv² / r, where m is mass, v is velocity, and r is radius.

In a conical pendulum, the tension in the string counters gravity and provides centripetal force.

tan(θ) = opposite / adjacent, used to find the angle of the string in a pendulum.

Inclined tracks that help vehicles negotiate curves at higher speeds.

Higher speed increases centripetal force, necessitating a banked angle for stability.

The acceleration that keeps an object moving in a circle, calculated as a_c = v² / r.

v = 2πr / T, where r is radius and T is the period of rotation.