Complete Physics Assessment

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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

A 0.25 kg ball of clay is thrown at 6 m/s right towards a 0.8 kg toy car at rest. How fast is the clay stuck to the car traveling after the collision?

1.4 m/s right

4.3 m/s right

1.7 m/s right

0.45 m/s right

2 / 10

What angle would you throw a ball to get the furthest X axis distance?

25° to the horizontal

45° to the horizontal

65° to the horizontal

90° to the horizontal

3 / 10

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

110 %

45 %

70 %

62 %

4 / 10

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

5 / 10

What is the mass of an object that accelerates at 4 m/s when 20 N of net force is applied?

5 kg

80 kg

0.2 kg

2.0 kg

6 / 10

What is the magnitude of frictional force when 162 N of force is required to keep an object in constant motion?

0 n

10 N

16.2 N

162 N

What is the magnitude of frictional force when 162 N of force is required to keep an object in constant motion?

If there is constant motion there is no acceleration and the net force is zero. The frictional force must equal the force applied in the opposite direction so 162 N as well

7 / 10

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.

8 / 10

Which letter above represents the parallel force?

9 / 10

What type of motion is seen in this graph?

constant forward velocity

constant backwards velocity

rest

acceleration

deceleration

Was moving at a constant rate of -4 m/s velocity for 30 seconds or had a constant backward velocity of 4 meters per second.

Slope on a V/T graph is equal to acceleration. There was no acceleration because the slope was flat, but there was a velocity the whole time.

10 / 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

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

A 5000 kg garbage truck traveling 10 m/s right hits a 1000 kg car traveling 2 m/s right. If the garbage truck is traveling 2 m/s right after the collision, what is the final velocity of the car?

10 m/s right

42 m/s right

4 m/s right

27 m/s right

2 / 20

A vector includes

magnitude

direction

both magnitude and direction

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)

3 / 20

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 / 20

How much work is done when a force of 50N forward is applied to move a box 6 meters in the same direction?

0 J

8.3 J

50 J

300 J

W = Fd

W = (50)(6) = 300 J

5 / 20

How far away should a 0.50 kg mass be placed on the left side of a fulcrum to balance a 2.0 kg mass 0.50 m on the right side of a fulcrum?

0.5 m

1.0 m

1.5 m

2.0 m

6 / 20

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

Mass is in the numerator of the force of gravity equation below and directly related to the force of gravity. If the mass doubles, the force of gravity would double.

7 / 20

What is the tangential velocity of a 50 kg girl is bicycling in circles with a radius of 5.00 m when it takes 12 s to make one rotation?

1.2 m/s

2.6 m/s

4.9 m/s

8.3 m/s

8 / 20

What happens to the magnitude of force required to stretch a spring 0.1 m when the spring constant increases?

force must increase

force must decrease

force stays the same

9 / 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)

10 / 20

What is net force of a 1400 N skydiver at terminal velocity?

0 N

1400 N up

1400 N down

At terminal velocity a person is no longer accelerating so net force is zero because air resistance force is equal to the weight force

11 / 20

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.

12 / 20

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

13 / 20

Which of Newton's Laws describes an objects resistance to a change in motion or rest?

Newton's First Law

Newton's Second Law

Newton's Third Law

Newtons First Law: Law of inertia

This is about a resistance to change in motion. An object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force.

14 / 20

Which statement is related to an objects inertia?

A cup sitting on a car slides off when you hit the breaks

A cup sitting on a windshield slides off because the surface is angled

A cup sitting on a car moves when you grab it

A cup is moving with the car and when you hit the breaks its inertia wants it to keep on going forward. Therefore the cup slides off because it wants to keep its state of motion.

15 / 20

You use a spring scale to measure the amount of force required to first start an object moving. You would use this value to determine the coefficient of ___________ friction.

static

kinetic

Coefficient of static friction. The moment the object first starts moving is also almost equivalent to the maximum force provided by friction while the object was at rest or static.

16 / 20

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.

17 / 20

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

18 / 20

Which letter above represents weight?

19 / 20