(Ch. 3) A vehicle decelerates, when (You may choose more than one answer.)

it's moving to the East and its acceleration points to the West

it's moving to the North and its acceleration points to the South

it's moving to the South and its acceleration points to the South

it's moving to the West and its acceleration points to the West

(Ch. 4) A cart on wheels full of corn kernels is pushed along a track with a constant force. Neglect all forces of friction. Much to the delight of the mice, there is a hole in the bottom of the cart and the corn dribbles out along the track. After a while, the mass of the cart and remaining corn is half of the original value. Which of the following is true of the cart now?

The acceleration is now double what it was before the corn dribbled out

The acceleration will remain constant even though the mass is changing because acceleration is independent of mass, it only depends upon the force applied

The acceleration is now half what it was before the corn dribbled out

The acceleration is zero through out the trip as the cart is in dynamic equilibrium

(Ch. 4) A feather and bowling ball are in a closed room. When air is in the room what will likely happen when they are simultaneously dropped from the ceiling?

The feather reaches terminal velocity quickly and then falls slowly at a constant speed

The ball reaches terminal velocity first and thus reaches the floor first.

The ball and the feather fall at the same rate and reach the floor together

The feather does not reach terminal speed in the length it falls.

(Ch. 4) While an object that weighs 25 N is falling at terminal speed,

the air resistance it encounters is equal to 25 N.

its velocity increases steadily

the net force on the object is 25 N

(Ch. 4) A light woman and a heavy man jump from a helicopter together with the same-size parachutes. Who will have a greater terminal speed?

Both should arrive at the same time

(Ch. 5) In the figure below, student "a" has a mass of 95 kg and student "b" has a mass of 77 kg. They sit in identical office chairs facing each other. Student "a" places his bare feet on the knees of student "b", as shown. Student "a" then suddenly pushes outward with his feet, causing both chairs to move. During the push and while the students are still touching one another:

each student exerts the same amount of force on the other

neither student exerts a force on the other

student "a" exerts a force on student "b", but "b" does not exert any force on "a"

each student exerts a force on the other, but "b" exerts the larger force

each student exerts a force on the other, but "a" exerts the larger force

(Ch. 5) A player catches a ball. If action is the force of the ball against the player's glove, reaction is the

the force of the glove against the ball

friction of the ground against the player's shoes

muscular effort in the player's arms

(Ch. 5) A truck's engine is off and it is pushed by a car to the right and they're moving together. The truck is more massive than the car. Which of the following statements is true?

The car exerts the same amount of force on the truck as the truck exerts on the car

The car exerts a larger force on the truck than the truck exerts on the car

The truck exerts a larger force on the car than the car exerts on the truck

(Ch. 5) Which of the following is FALSE about action-reaction forces?

They are acting on the same object

Neither exists without each other

They are opposite in directions

(Ch. 5) Earth pulls down on you with a gravitational force that you call your weight. Do you pull up on Earth with the same amount of force?

Yes, you pull up on Earth with the same amount of force

No, the contact force from the ground cancels the force of Earth on you.

Earth exerts a much greater force on you than you exert on Earth

No, the contact force from the ground cancels the force by you on Earth

(Ch. 5) A cannon recoils while firing a cannonball. The speed of the cannon's recoil is relatively small because the

cannon has much more mass than the cannonball

force against the cannon is smaller than force against the ball

(Ch. 5) When a cat is sitting on a chair, gravity pulls the cat downward and the chair supports it upward. Do the gravity and the support force make a pair of action and reaction?

No, they don't make a pair of action and reaction.

Yes, they make a pair of action and reaction.

(Ch. 5) A mouse slides down on a ramp. Which of the following increases with increasing slope of the ramp?

The component of the weight of the mouse that is parallel to the slope

The component of the weight of the mouse that is perpendicular to the slope

(Ch. 6) In the absence of external forces, momentum is conserved in

both elastic and inelastic collisions

neither elastic nor inelastic collision

(Ch. 6) When a dish falls, will the force on the dish be less if it lands on a carpet than if it lands on a hard floor

Yes, force will be less on a carpet

No, force will be the same on a carpet as on a hard floor

No, force will be less on a hard floor

(Ch. 7) The bob of a simple pendulum has its maximum kinetic energy at the

midpoint between top and bottom

at all points along its path of swing

(Ch. 8) When ice skaters draw their arms or legs inward, they

decrease their rotational inertia so as to increase their rotational speed

increase their rotational inertia so as to reduce their rotational speed

increase their rotational inertia so as to increase their rotational speed

decrease their rotational inertia so as to reduce their rotational speed

Physics final

Authored by Alyssa Hoy

Physics

University

NGSS covered

Used 1+ times

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102 questions

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MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(Ch. 2) The use of inclined planes for Galileo's experiments helped him to

discover the concept of energy.

discover the concept of momentum.

eliminate the acceleration of free fall.

discover the property called inertia.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

(Ch. 2) Which of the following are in equilibrium? (You may select more than one answer.)

A car travelling at a steady speed of 60 mph on a straight road

A car going in a straight road but slowing down for a traffic light

A car turning a curve at a constant 30 mph speed

A ball sitting on table

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

When you stand on TWO bathroom scales with one foot on each scale and your weight evenly distributed, each scale will read

zero

half your weight

twice your weight

your weight

Tags

NGSS.HS-PS2-4

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(Ch. 2) The earth moves about 30 km/s relative to the sun. When you jump upward in front of a wall, the wall does not slam into you. This is because the wall

has too little gravity to influence you

has negligible inertia compared with the Sun

and you are moving at the same horizontal speed before, during, and after your jump

moves in an opposite direction to you.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(Ch. 2) A cart is pulled by a pair of 20 N forces that are perpendicular to each other, one to the West, the other to the South. What is the net force on the cart?

0 N

40 N

28 N

20 N

36 N

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(Ch. 2) If an object is at rest on a surface, we can tell that

the net force acting on the object is zero.

gravity is the only force acting on the object.

there is no force acting on the object

no support force is acting on the object

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(Ch. 2) If you toss a coin straight upward in a train that is speeding up quickly, the coin will land

in your hand

in front of you

behind you

Tags

NGSS.HS-PS2-1

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Physics final

(Ch. 2) The use of inclined planes for Galileo's experiments helped him to

(Ch. 2) Which of the following are in equilibrium? (You may select more than one answer.)

When you stand on TWO bathroom scales with one foot on each scale and your weight evenly distributed, each scale will read

(Ch. 2) The earth moves about 30 km/s relative to the sun. When you jump upward in front of a wall, the wall does not slam into you. This is because the wall

(Ch. 2) A cart is pulled by a pair of 20 N forces that are perpendicular to each other, one to the West, the other to the South. What is the net force on the cart?

(Ch. 2) If an object is at rest on a surface, we can tell that

(Ch. 2) If you toss a coin straight upward in a train that is speeding up quickly, the coin will land

(Ch. 2) The scaffold is in mechanical equilibrium. The forces by the two painters, the weight of the scaffold, and the tension by the left rope on the scaffold are as shown. How much is the tension by the right rope?

(Ch. 3) You throw a rock upward with a speed of 30 m/s. How long until the rock reaches its maximum height?

(Ch. 3) Which undergoes greater acceleration: a car that speeds from 55 km/h to 60 km/h in 10 s or a bicycle that goes from 0 km/h to 5 km/h in 5 s?

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