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

If a ball is thrown with a Y component of velocity of 30 m/s what is its acceleration at the top of its flight path?

0 m/s/s down

10 m/s/s down

30 m/s/s down

30 m/s/s up

The acceleration in the air is always 10 m/s² down. This is how much velocity is changing every second. After three seconds starting from a velocity of 30 m/s up the ball has a velocity of 0 m/s at the top. The acceleration is still 10 m/s² down, so one second later the ball would be going 10 m/s down, and 20 m/s down a second after that, then 30 m/s down when returning to the same height.

2 / 10

A 460 N box is hoisted above a truck by John who applies 60 N of force. What is the actual mechanical advantage of the pulley system?

0.13

7.67

27600

2760

3 / 10

Which is a simple machine consisting of a bar or plank that turns around a pivot point?

lever

pulley

incline plane

4 / 10

What is the acceleration of a 1400 N skydiver when she encounters 600 N of air resistance? (use g = 9.8 m/s/s)

9.8 m/s/s

0 m/s/s

4.5 m/s/s

5.6 m/s/s

Find Net Force

1400 N weight, which is a vector, directed down and mathematically -1400
600 N air resistance is opposite of motion so up and mathematically is +600
add the vectors together with their signs to get net force
-1400 + 600 = - 800 N or 800 N down

Find Mass

F_w = mg
m =F_w/g
m = 1400/9.8 = 143 kg

Calculate acceleration

F_net= ma

a = F_net/m

a = 800/143 = 5.6 m/s²

5 / 10

When a bug hits your windshield. Which of the following are true?

The bug applies an equal of force to your windshield as your windshield to the bug

The windshield applies more force to the bug than the bug to the windshield

The bug applies more force to the windshield than the windshield to the bug

Newtons Third Law: All forces are paired, equal and opposite. When you push on an object with 15 Newtons of force it pushes back on you with 15 Newtons of force. The forces are equal.

6 / 10

Which is almost always greater

kinetic friction

static friction

rolling friction

When an object is at rest (static) the surfaces between objects are settled and closer together. With surfaces closer together there is more interaction and therefore more static friction friction than kinetic.

7 / 10

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

Increases

Decreases

8 / 10

What is the displacement between 5 and 15 seconds

0 m forward

8 m forward

40 m forward

80 m forward

9 / 10

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

10 / 10

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

9.8 m/s/s up

0 m/s

0 m/s/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

Your score is

LinkedIn Facebook Twitter

20 Random Physics Questions from our Complete Test Bank

20 - Physics Questions

20 questions from our bank of first semester material

1 / 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.

2 / 20

How much more momentum would a moving object have with twice the mass?

1/2 times

2 times

4 times

1/2

3 / 20

If a ball is thrown with a 7 m/s X component of velocity, what is the magnitude of X component velocity if still in the air after 1.3 seconds?

0 m/s

10 m/s

7 m/s

17 m/s

In projectile motion only the Y component of velocity is accelerated. The X component is in constant motion. If it was 7 m/s at the beginning it is still 7 m/s anywhere in the air unchanged.

4 / 20

If a ball is thrown with a Y component of velocity of 30 m/s what is the magnitude of Y component of velocity when it returns to the same height?

0 m/s

10 m/s

20 m/s

30 m/s

The acceleration in the air is always 10 m/s² down. This is how much velocity is changing every second. After three seconds starting from a velocity of 30 m/s up the ball has a velocity of 0 m/s at the top. The acceleration is still 10 m/s² down, so one second later the ball would be going 10 m/s down, and 20 m/s down a second after that, then 30 m/s down when returning to the same height.

Magnitude means just the number and not the direction so 30 m/s when it returns to the same height.

5 / 20

20 degrees north is a

scalar

vector

A scalar has a magnitude only which includes a number and unit (15 meters)

A vector has a magnitude and a direction (15 meters north)

6 / 20

What is the magnitude of the resultant of 50 meters north and 72 meters west?

103 m

65 m

88 m

32 m

7 / 20

What length of ramp would you ideally have to use to raise an 815 N box a height of 2.10 m using a force of 165 N?

10.37 m

9.81 m

0.43 m

13.22 m

8 / 20

A 460 N box is hoisted above a truck by John who applies 60 N of force. What is the actual mechanical advantage of the pulley system?

0.13

7.67

27600

2760

9 / 20

If a car has a mass of 750 kg, how much force is required to stop the car if it was traveling 12.5 m/s and took 10 m to stop?

2434 N

5859 N

12230 N

1460 N

10 / 20

What is the unit of work?

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

11 / 20

What is the power output when it takes a force of 50N forward is applied to move a box 6 meters in the same direction in 6 seconds?

0 W

8.3 W

50 W

300 W

12 / 20

How far away should you place a 0.50 kg mass on the left side of a fulcrum to balance a 0.50 kg mass 0.10 meters and another 2.0 kg mass 0.50 m both on the right side of a fulcrum?

0.6 m

2.1 m

2.9 m

4.2 m

13 / 20

What is the force of attraction between Isaac Newton and his 0.15 kg apple the moment it is 0.3 meters away if his weight was 83.6 kg?

9.3 x 10^-9 N

2.8 x 10^-9 N

140 N

40 N

14 / 20

What is the acceleration of a 1400 N skydiver at terminal velocity?

0 m/s/s

9.8 m/s/s down

9.8 m/s/s up

No net force and no acceleration at terminal velocity

15 / 20

What is the weight of a 1400 N skydiver at terminal velocity?

0 N

1400 N up

1400 N down

The way the question was stated it was giving you weight which is a force (F_w = 1400 N)

16 / 20

What type of friction do you have while an object is at rest?

Static

Kinetic

Rolling

Static Friction: at rest

Kinetic Friction: moving and can be sliding or rolling which would have a lower coefficient of friction than sliding.

17 / 20

Which letter above represents normal force?

18 / 20

A change in displacement over time is ______________.

displacement

velocity

acceleration

distance

v = (Δx)/t

The change in displacement over time is the definition of velocity. See the equation above

19 / 20

What is your average velocity after going 10 meters east followed by 20 meters west in 10 seconds?

1 m/s east

1 m/s west

3 m/s east

3 m/s west

1 m/s

3 m/s

What is your velocity after going 10 meters east followed by 20 meters west in 10 seconds?
Velocity is a vector so direction matters so displacement divided by time. Make the directions into signs.
10 m east is +10
20 m west is -20
now calculate displacement and divide that by time ((+10)+(-20))/10
-10/10 = -1 m/s
turn the negative back into a direction 1 m/s west

20 / 20

15 m/s is a _________.

scalar distance

scalar velocity

scalar speed

scalar displacement

vector distance

vector displacement

vector speed

vector velocity

15 m/s is a magnitude only but includes a distance over time so is the scalar speed.

Your score is

LinkedIn Facebook Twitter

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