Complete Physics Assessment

Get more physics practice and get that A. Take a 10 or 20 question physics full physics assessment randomized all questions in our test bank.

Use our equation sheet for guidance on the equations.

Physics Equation Sheet

10 Random Physics Questions from our Complete Test Bank

10 - Physics Questions

10 questions from our bank of first semester material

1 / 10

What happens to potential energy as an object falls under ideal conditions?

It increases

It decreases

It stays the same

Mechanical energy stays the same as potential energy gets converted to kinetic energy

Mechanical Energy (PE + KE) stays the same

Potential energy goes down

Kinetic energy goes up

2 / 10

Potential energy is dependent on __________________.

location

motion

heat

Location or height which is a type of location

how far you pull the a bow back or how high you lift an object

See types of distance and height in the equations below

Potential energy is equal to the work done, force applied over a distance, to store it (PE = Fd)

Gravitational potential energy is equal to its weight (mass times gravity) lifted a height to store it (GPE = mgh)

3 / 10

What is the unit of work?

The joule is the unit of work and all of the energies (ME, KE, PE, Heat)

4 / 10

The number of rotations per time is the ___________.

frequency

period

displacement

radius

Frequency is the number of rotations per time and its unit is Hz or rotations per second

5 / 10

What is the net force in the picture above

7 N right

22 N right

8 N left

52 N left

30 left is -30
15 right is +15
7 right is +7

Add them together and turn the sign back into a direction (-30 + 15 + 7 = -8)

8 Newtons Left

6 / 10

What happens to the frictional force as the angle of incline increases?

Increases

Decreases

7 / 10

Which number above is where the incline angle would be placed?

8 / 10

When a ball is thrown in the air straight up, what is the velocity at the top of its flight?

9.8 m/s up

0 m/s

9.8 m/s down

9.8 m/s/s down

The Y velocity continues to change but is 0 m/s at the top of the flight for an instant.

The acceleration is always 9.8 m/s²down or averaged to 10 m/s²down anywhere in flight but the velocity does change in the Y axis and is 0 m/s at the top

9 / 10

What is the final velocity of a ball throw down at 10 m/s after two seconds?

19.8 m/s down

0 m/s

29.6 m/s down

9.6 m/s down

9.6 m/s up

10 / 10

What it the magnitude of 15 meters north?

15 meters

15 meters north

meters

north

Magnitude is the number and unit: 15 meters

without any direction

Your score is

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20 Random Physics Questions from our Complete Test Bank

20 - Physics Questions

20 questions from our bank of first semester material

1 / 20

How much torque would be provided by a 15N force the direction of A above if it was 0.10 meters away from the bolt?

1.5 Nm cw

1.5 Nm ccw

150 Nm cw

150 Nm ccw

2 / 20

What type of collision do you have when both momentum and kinetic energy are conserved?

elastic collision

inelastic collision

neither both momentum and kinetic energy are never conserved

In an elastic collision momentum and kinetic energy are conserved

In an inelastic collision momentum is conserved but kinetic energy is not

Kinetic energy is only a part of the entire energy. The entire energy would be conserved in either case but the definition is only talking about kinetic energy.

3 / 20

What is the actual speed of a ball is thrown with an X component velocity of 7 m/s forward and a Y component of velocity of 30 m/s up when at the top of it's flight path?

30.1 m/s

10 m/s/s

35.2 m/s

7 m/s

At the top of a flight path the y component of velocity is 0 m/s temporarily so speed is only made up of the horizontal component. So 7 m/s here.

4 / 20

What is true about vector A and B as you see them above?

They have the same direction and a different magnitude

They have a different direction and the same magnitude

Both direction and magnitude are the same

Magnitude includes the number and a unit. Since no numbers are involved the length of the arrow represents the magnitude. The directions are pointing the same way but the lengths are different.

5 / 20

When energy is lost from a simple machine which of the following must be less

work output

work input

distance output

force output

You cannot create work or energy. In a perfect (ideal) scenario W_in = W_out but it’s impossible for W_outto be more. In real situations W_outis less because heat is lost.

6 / 20

Kinetic energy is dependent on __________________.

location

motion

heat

Movement: see how KE has velocity in the equation below

KE = ½ mv²

7 / 20

How much work would a 75 kg student do to climb up a ladder 9 meters?

0 J

675 J

3250 J

6615 J

You must lift your weight as the force when going up

F_w = mg = (75)(9.8) = 735 N

W = Fd = (735)(9) = 6615 J

8 / 20

What is your mass if the attractive force from the 55 kg person 2.0 meters across the table is 4.586 x 10^-8 N? (when rounded to two significant figures)

340000 kg

25 kg

50 kg

63 kg

150000 kg

9 / 20

Which graph correctly shows how distance relates to force using the Law of Universal Gravitation?

Distance is in the denominator and squared in the universal gravitation equation below. There is a inverse squared relation. Force decreases not proportionately more early since the d is squared. If you double distance the force goes down to 1/4.

10 / 20

What is the force of gravity between 96kg Joe and 87kg Jim when the distance between them is 0.20 meters?

1.39 x 10^-5 N

4.79 x 10^-3 N

1.87 x 10^4 N

2.79 x 10^-6 N

11 / 20

Which direction does an object accelerate?

Always directed up

Always directed down

Always directed the direction of the net force

Acceleration is always in the direction of the net force. If you push a box to the right, with an overall or net force to the right, the object will accelerate to the right.

12 / 20

Which changes depending on your location?

mass

weight

Mass (kg) never changes because it is a measure of the matter that you are composed of. You are the same matter on earth or on the moon.

Weight (F_w) changes when g changes. g changes depending on your altitude on earth, in space, or on another planet (it is not always 9.8 m/s²which is why many classes use a more rounded 10 m/s²instead.

(F_w = mg)

13 / 20

Which letter above represents weight?

14 / 20

What is the correct description of this exact angle?

17 Degrees North of West

17 Degrees West of South

17 Degrees North of East

17 Degrees South of West

15 / 20

What is the maximum these two vectors can be when added together?

The maximum is when you put the two vectors in the same direction head to tail. Had to tail means the second starts where the last left off.

16 / 20

What type of motion is seen in this graph?

constant forward velocity

constant backwards velocity

rest

acceleration

deceleration

Went from 16 meters to 8 meters (backwards 8 meters) in 30 seconds. The slope on a position or displacement time graph is equal to velocity

Constant velocity backwards

17 / 20

When a ball is thrown in the air straight up, what is the velocity at the top of its flight?

9.8 m/s up

0 m/s

9.8 m/s down

9.8 m/s/s down

The Y velocity continues to change but is 0 m/s at the top of the flight for an instant.

The acceleration is always 9.8 m/s²down or averaged to 10 m/s²down anywhere in flight but the velocity does change in the Y axis and is 0 m/s at the top

18 / 20

What it the magnitude of 15 meters north?

15 meters

15 meters north

meters

north

Magnitude is the number and unit: 15 meters

without any direction

19 / 20

15 m east is a _____________.

scalar distance

scalar displacement

scalar speed

scalar velocity

vector distance

vector displacement

vector speed

vector velocity

15 m is a magnitude and east is a direction. This is the vector displacement having both magnitude and direction from the origin to the end.

20 / 20

What is your distance after going 10 meters east followed by 3 meter west?

13 meters east

13 meters

7 meters east

7 meters west

7 meters

Distance is a scalar that has no direction. You do nothing with the direction and just add all the individual magnitudes up (10 + 3) here.

You can't put a direction on the final answer since it is a measure of how far you went totally and not a direction.

You should not put a direction on the final answer either since this is not a measure of where you are located but just how far you went in any direction.

Your score is

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Resources

StickMan Physics Home Page
Stickman Physics Table of Contents: Use the search bar or click here to easily find a unit or topic
Physics Equation Sheet: commonly used equations, variables, and units
Rule of Ones: analyzing equations to determine how other variables change
Holdensclass.com: Video walk-through of Many Physics Concepts