Kinematics Review

Don’t click until I tell you 1.Choice 1 2.Choice 2 3.Choice 3 4.Choice 4 0 of 30

Quantity that has both magnitude and direction: 0 of 30 1.Scalar 2.Directrix 3.Pointer 4.Vector

An object moving at 24 m/s comes to rest in 8 seconds. The average acceleration is: 0 of m/s m/s m/s m/s 2

Metric prefix meaning “thousands” 0 of 30 1.Milli 2.Centi 3.Mega 4.Kilo

SI units of mass 0 of 30 1.Newtons 2.Kilograms 3.Pounds 4.Gallons

To find the displacement during a time interval you should determine the ________ on a position-time graph. 0 of 30 1.Area under the curve 2.Slope 3.The duration 4.The “rise”

Metric prefix meaning x of 30 1.Giga 2.Pico 3.Nano 4.centi

The amount of space occupied by an object 0 of 30 1.Mass 2.Volume 3.Density 4.Weight

Which is NOT a vector quanity? 0 of 30 1.Speed 2.Acceleration 3.Force 4.Velocity

Which is NOT a base unit in the SI system? 0 of 30 1.Candela 2.Newton 3.Kilogram 4.Meter

(8.0 x )/ (2.0 x 10 6 ) 0 of x x x x 10 2

Precision is affected by_____ while accuracy is affected by ______. 0 of 30 1.Systematic errors, random errors 2.Incorrectly calibrated instruments, taking a large number of measurments 3.Random errors, systematic errors 4.None of the above

How long does it take for a car going 2 m/s to reach a speed of 6 m/s if it accelerates at 2.0 m/s 2 ? 0 of s s s s

A car that travels 6.0 km in 2 minutes has an average speed of: 0 of km/min m/s 3.50 m/s 4.30 m/s

The displacement of a person who walks 45 m east and then walks 30 m west is: 0 of m west 2.75 m east 3.15 m east m w

The acceleration of an object that increases speed from 5.0 m/s to 15 m/s in 10 seconds is: 0 of m/s m/s m/s m/s 2

Which of the following is NOT a valid kinematics formula? 0 of 30 1.v f 2 =v i 2 + 2at 2.d=1/2 (v i + v f ) t 3.d = v i t + ½ at 2 4.a=  v/  t

PROJECTILE MOTION REVIEW

Acceleration describes: 0 of 30 1.How fast something is moving 2.How fast something is moving and in what direction 3.How quickly the velocity is changing 4.How quickly the position is changing

The slope of a velocity-time graph indicates the _____ of an object 0 of 30 1.Displacement 2.Speed 3.Acceleration 4.Distance

Metric prefix meaning times of 30 1.Milli (m) 2.Micro (  ) 3.Centi (c) 4.Nano (n)

Metric prefix meaning “million” 0 of 30 1.Mega 2.Kilo 3.Pico 4.Giga

6.00 x x 10 4 = ? 0 of x x x x 10 6

Which of the following does NOT describe an object that is accelerating 0 of 30 1.A dropped ball that is speeding up 2.A baseball player slowing down as they slide into home. 3.A car going around a turn at constant speed. 4.A rocket traveling really fast.

Vector quantity describing how much the position of an object changes (and in what direction) 1.Distance 2.Velocity 3.Displacement 4.Acceleration

If air resistance is negligible the acceleration of an object in free fall (on Earth) ______ 0 of 30 1.Depends on how heavy it is 2.Is 9.8 m/s2 upward if the object is moving up and 9.8 m/s2 downward if the object is moving down. 3.Is 9.8 m/s2 down regardless of the direction the object is moving.

Speed a dropped object will be traveling 3 seconds later: 0 of m/s 2.15 m/s 3.25 m/s 4.30 m/s

A ball is thrown straight upward at 20 m/s. It returns to where it was thrown in: 0 of s s s s

If an object is thrown straight upward at 23 m/s what is its velocity 2.0 seconds later 0 of 30 1.About 10 m/s up 2.About 10 m/s down 3.About 3 m/s up 4.About 3 m/s down

The horizontal acceleration of a projectile on earth. 0 of m/s m/s m/s ft/s 2

The magnitude of 3.0 m North plus 4.0 m East is: 0 of m m m m

The horizontal and vertical parts of a diagonal vector. 0 of 30 1.Resultants 2.Components 3.Cosecants 4.Hypotneuses

A projectile is launched horizontally from a cliff at 40 m/s. Three seconds later the horizontal component of its velocity is: 0 of m/s 2.30 m/s 3.40 m/s 4.50 m/s

A projectile is launched horizontally from a cliff at 40 m/s. Three seconds later the vertical component of its velocity is: 0 of m/s 2.30 m/s 3.40 m/s 4.50 m/s

A projectile is launched horizontally from a cliff at 40 m/s. Three seconds later its speed is: 0 of m/s 2.30 m/s 3.40 m/s 4.50 m/s

A projectile is launched at 20 m/s at an angle of 30 o above horizontal. The horizontal component of its initial velocity is: 0 of m/s 2.10 m/s m/s m/s

A projectile is launched at 20 m/s at an angle of 30 o above horizontal. The vertical component of its initial velocity is: 0 of m/s 2.20 m/s m/s m/s

A projectile is launched at 20 m/s at an angle of 30 o above horizontal. At its highest point the total velocity is ____ and the acceleration is _____. 0 of m/s 9.8 m/s/s m/s 9.8 m/s/s 3.10 m/s 0 m/s/s m/s 0 m/s/s m/s 9.8 m/s/s

A projectile is launched at 20 m/s at an angle of 30 o above horizontal. The amount of time it remains airborne is about. 0 of seconds seconds seconds seconds

A projectile launched at 20 m/s at an angle of 30 o lands on a level surface. How far away does it land? 0 of meters 2.20 meters 3.34 meters meters 5.17 meters

The magnitude of the centripetal acceleration. 0 of 30 1.a c =v/r 2 2.a c =r/v 3.a c =v 2 /r 2 4.a c =v 2 /r

The acceleration of an object in uniform circular motion: 0 of 30 1.Is zero 2.Points outward 3.Points to the center 4.Points in the direction the object is moving

A push or a pull 0 of 30 1.Acceleration 2.Pressure 3.Force 4.Mass

Forces are measured in: 0 of 30 1.Newtons 2.Kilograms 3.Pascals 4.m/s 2

On earth the force of gravity acting on a 4.5 kg object is N kg 3.45 N N 0 of 30

What is the mass of an 18 kg object on earth? 0 of kg N 3.18 kg N

If a 2.0 kg textbook were taken to the moon its mass there would be: 0 of 30 1.Significantly smaller than on earth. 2.Zero 3.Still 2.0 kg 4.Significantly larger than on earth

Which of the following is NOT a fundamental force of nature? 0 of 30 1.Weak Nuclear Force 2.Electromagnetic Force 3.Friction Force 4.Gravitational force

Newton’s first law states: 0 of 30 1.Moving things tend to slow down and stop if not acted on by a force. 2.Constant velocity motion is only possible if no forces act on an object. 3.This go in a straight line at constant speed when the net force is zero.

Tendency of an object to continue moving like it already was. 0 of 30 1.Density 2.Power 3.Force 4.Inertia

Things have more inertia if they have a greater: 0 of 30 1.Density 2.Volume 3.Mass 4.Free fall acceleration

Micro (  ) 0 of 30 1.x x x x10 +12

A ball is thrown straight up. At its highest point its velocity is ____ and its acceleration is _____ 0 of , 0 2.0, 10 m/s 2 down 3.10 m/s, m/s, 10 m/s 2 up

A 5.0 kg object experiences a forward force of 20.0 N and a backwards force of 5 N. The net force is: 0 of N 2.25 N 3.75 N 4.15 N

A 5.0 kg object experiences a forward force of 20.0 N and a backwards force of 5 N. The acceleration is: 0 of m/s m/s m/s m/s 2

If the frictional force is 40 N and the normal force is 200 N the frictional coefficient is: 0 of

A horizontal force of 35 N causes a 2.0 kg object to accelerate at 2.5 m/s 2 across the floor. The net force is____. 0 of N 2.20 N N N

A horizontal force of 35 N causes a 2.0 kg object to accelerate at 2.5 m/s 2 across the floor. The frictional force is____. 0 of N 2.30 N 3.10 N 4.0 N

A horizontal force of 35 N causes a 2.0 kg object to accelerate at 2.5 m/s 2 across the floor. The coefficient of friction is____. 0 of

On earth 1.0 kg weighs 0 of lbs N kg lbs

If 2.0 kg weighs 8.0 N on the surface of a planet, the acceleration of a dropped object would be: 0 of m/s 2 2.Depends on the mass 3.16 m/s m/s 2

Equal to kg∙m/s 2. 0 of 30 1.Liters 2.Mph 3.Newtons 4.Watts

If a 140 kg football player collides with an opponent who is only 60 kg which player exerts a larger force? 0 of 30 1.The 140 kg player 2.The 60 kg player 3.The forces are equal in magnitude

An object will fall at constant speed 0 of 30 1.Once air resistance exerts a force equal to the weight of the object 2.Only on the moon 3.Only if it has a parachute or a propeller. 4.Only if there is no gravity

A 6.0 kg object traveling at 5.0 m/s strikes a 2.0 kg object that is initially at rest. What is the total momentum following the collision? 0 of kg m/s 2.75 kg m/s 3.30 kg m/s 4.Can not be determined

A solid block of metal measures 5 cm x 6 cm x 10 cm and has a mass of 1.8 kg. The density of the metal is: 0 of g/cm g/cm g/cm g/cm 3

Kepler determined that planets travel in ________ orbits. 0 of 30 1.Circular 2.Elliptical 3.Parabolic 4.Linear

Demonstrated that objects on earth experience a gravitational attraction? 0 of 30 1.Kepler 2.Newton 3.Galileo 4.Cavendish

Formulated three laws of planetary motion: 0 of 30 1.Galileo 2.Einstein 3.Kepler 4.Newton

What is the acceleration of a car going around a 100 m radius turn at a constant speed of 20 m/s? 0 of m/s m/s m/ m/s 2

A 6.0 kg object traveling at 5.0 m/s strikes a 2.0 kg object that is initially at rest. If the objects stick together, what is their speed following the collision? m/s m/s m/s m/s 0 of 30

A ball that is thrown straight up at 20 m/s reaches a maximum height of 0 of m 2.20 m 3.40 m 4.80 m

What is the momentum of a 6.0 kg object traveling at 5.0 m/s? 0 of kg m/s 2.75 kg m/s 3.30 kg m/s kg m/s