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.

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10 Random Physics Questions from our Complete Test Bank

10 - Physics Questions

10 questions from our bank of first semester material

1 / 10

Impulse is equal to

change in momentum

force times time

mass times change in velocity

all choices

The main impulse equation if J=Ft
Impulse is also equal to change in momentum
Change in momentum is equal to mass times change in velocity

2 / 10

How would you describe the direction above?

20 degrees west of south

20 degrees south of north

20 degrees south of west

20 degrees north of west

3 / 10

What is the ideal mechanical advantage when a ramp of 4 meters is used to lift a 1400 N sled full of toys 1 meter off the ground pushing with a force of 500 N?

350

4 / 10

What is the unit of energy?

Joules (J) is the unit for energy (ME,PE,KE,Heat, or work)

Work is the transformation of one form of energy to another.

5 / 10

How would a ball travel if you were spinning a ball on a rope above your head and the rope broke?

directly outward from the center of the circle

directly forward tangent to the circle

inwards to the center of the circle

in and outwards repeditively

The ball will keep on going straight when there is not a centripetal force pulling it in. Straight from the outside of the circle is called tangent. So it would go straight ahead tangent to the circle.

6 / 10

Solve for the tension in one of the ropes suspending the object above.

5.4 N

7.35 N

8.5 N

10.3 N

7 / 10

What is the tension in each of two ropes vertically suspending a 45 kg object? (use g = 9.8 m/s/s)

45 kg

441 N

0.218 N

221 N

Tension if a single rope would have the equal magnitude to the weight down. With two ropes both directed up, they are sharing the weight so divide by two.

F_w = mg

F_w = (45)(9.8) = 441 N

441/2 = 220.5 N

8 / 10

What is the tension in a rope when you apply a force of 100 N to pull an object forward in constant motion.

0 N

100 N backward

10 N backward

100 N forward

10 N forward

9 / 10

What is the weight of a 4.0 kg object on a 25° frictionless Incline Plane? (Use g = 9.8 m/s²)

0.41 N

4.0 N

9.8 N

39.2 N

10 / 10

One ball is thrown up and another is dropped. Which ball will have a greater downward velocity after 2 seconds?

the ball thrown up

the ball dropped

both will be the same

The acceleration is always 9.8 m/s²down or averaged to 10 m/s²down.

The ball dropped would have a head start and always be traveling faster downwards

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

What is the change in momentum of an 85 kg person running at 8 m/s forward when hitting a wall and bouncing back at 3 m/s?

-935 kg∙m/s

435 kg∙m/s

-1251 kg∙m/s

894 kg∙m/s

2 / 20

What is the maximum magnitude of vector A and B in any arrangement?

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.

Maximum is B + A or A + B

3 / 20

Tom pushes a 50 kg box up a 15 meter incline plane by pushing with a force of 100 N. The end result is that the box was lifted 2 meters. What was the efficiency of this simple machine?

32.1%

66.7%

73.1 %

32 %

4 / 20

Joe is attempting to lift a 3000 N motorcycle into a trailer 1.5 meters off the ground using a pulley system. If Joe applies 300 N of force, what is the ideal distance he would pull on his side of the rope?

0.0005 m

15 m

10 m

450

5 / 20

Mechanical Energy is composed of ____________.

kinetic energy

potential energy

both potential and kinetic energy

heat energy

Mechanical energy is composed of potential energy plus kinetic energy. Its the total of the moving and what could be released as moving energy.

ME = KE + PE

GPE = mgh or GPE = F_wh

You are given weight not mass so use this form:

GPE = mgh = (50)(3.5) = 175 J

6 / 20

How much potential energy is in a 50kg boulder 3.5m off the ground?

1.43 J

1715 J

3862 J

6732 J

7 / 20

What is the unit of power?

Watt is the unit of power which is a Joule per second W = F/d

8 / 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

9 / 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

10 / 20

What would happen to the force of gravity if you doubled the mass of one object?

double the force

triple the force

one third the force

one ninth the force

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

What is the acceleration of a 1400 N skydiver that has no air resistance?

0 m/s/s down

9.8 m/s/s down

5 m/s/s down

6.4 m/s/s down

When air resistance on earth is ignored and an object is not too high up, the acceleration due to gravity is 9.8 m/s/s

13 / 20

When hitting a baseball you apply 150 N of force with the bat on the ball. How does the magnitude of force the ball applies to the bat compare?

Less than 150 N

More than 150 N

Exactly 150 N

Newtons Third Law: All forces are paired, equal and opposite. When hit a baseball with 15 Newtons of force forward it hits you with 15 Newtons of force backwards. Magnitude means ignore the direction and just look at the number and unit.

14 / 20

95kg Joe jumps off a 0.8kg skateboard and accelerates at 1.5 m/s/s right what is the acceleration of the skateboard?

98 m/s/s right

178 m/s/s left

114 m/s/s left

0.0126 m/s/s left

15 / 20

Which of Newton's Laws is most related to all the forces on an object causing the object to accelerate?

First

Second

Third

Newtons First Law: Law of Inertia. An object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force. (More mass more inertia or resistance to change)

Newtons Second Law: Force causes acceleration (F=ma)

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.

16 / 20

What would happen to your weight if you were on a planet with twice the acceleration due to gravity?

It would half

It would double

It would stay the same

It would quadruple

17 / 20

What is the magnitude of the resultant of these two vectors if added at a right angle to each other?

10.5

16.2

19.7

388

18 / 20

One ball is thrown down at 5 m/s and another is thrown down at 10 m/s at the same time. How will the distance between them change as they fall.

the 10 m/s second ball will keep getting further away

the 5 m/s ball will be catching up with the 10 m/s ball

they will maintain the same distance apart during the fall

The ball thrown down will always be traveling faster as they both change by 9.8 m/s²down

Since traveling faster the ball thrown downwards will always be getting further ahead

An acceleration of 9.8 m/s²down means a rock thrown

5 m/s down will be going 14.8 m/s a second later (going 14.8 meters in a second - if that rate was maintained)
10 m/s down will be going 19.8 m/s a second later (going 19.8 meters in a second - if that rate was maintained)

The one going faster will always be faster and getting further away

19 / 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

20 / 20

Pick the right equation:

How far did Tony travel when he constantly accelerated from 5 to 15 m/s in 5 seconds?

How far is displacement or x

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