Quiz about PS Unit 5

Question 1

If gravity is the only force acting on an object, it is said to be in:

Accepted Answer

Free Fall

Answer

Terminal Velocity

Answer

Inertia

Answer

Friction

Question 2

What is the friction-like force that opposes the motion of objects that move through the air?

Accepted Answer

Air Resistance

Answer

Gravity

Answer

Weight

Answer

Field

Question 3

What is the maximum speed an object will reach when falling through a substance?

Accepted Answer

Terminal Velocity

Answer

Free Fall

Answer

Inertia

Answer

Friction

Question 4

If no external forces act on a group of objects, their total momentum does not change. This is known as:

Accepted Answer

Law of conservation of momentum

Answer

Free Fall

Answer

Terminal Velocity

Answer

Air Resistance

Question 5

What is the tendency of an object to resist any change in its motion?

Accepted Answer

Inertia

Answer

Gravity

Answer

Friction

Answer

Weight

Question 6

What is a region of space that has a physical quantity at every point?

Accepted Answer

Field

Answer

Gravity

Answer

Inertia

Answer

Weight

Question 7

What is a push or pull on an object called?

Accepted Answer

Force

Answer

Weight

Answer

Inertia

Answer

Field

Question 8

What is the force that opposes the sliding motion of two surfaces that are touching each other?

Accepted Answer

Friction

Answer

Air Resistance

Answer

Gravity

Answer

Weight

Question 9

What is an attractive force between any two objects that depends on the masses of the objects and the distance between them?

Accepted Answer

Gravity

Answer

Friction

Answer

Inertia

Answer

Field

Question 10

What is the net force?

Accepted Answer

The overall force acting on an object

Answer

The force of gravity alone

Answer

The force of friction alone

Answer

The force of air resistance alone

Question 11

Forces can be __________ or __________. (Hint: One will cause the object to move, One will not)

Accepted Answer

Balanced or Unbalanced

Answer

Strong or Weak

Answer

Fast or Slow

Answer

Heavy or Light

Question 12

What causes the amount of friction on an object?

Accepted Answer

The nature of the surfaces and the force pressing them together

Answer

The weight of the object alone

Answer

The speed of the object alone

Answer

The size of the object alone

Question 13

What are the 3 types of friction?

Accepted Answer

Static, Sliding, and Rolling

Answer

Air, Water, and Ground

Answer

Light, Medium, and Heavy

Answer

Fast, Slow, and Stationary

Question 14

What is the formula to solve for weight? (Think of the Triangle)

Accepted Answer

Weight = Mass x Gravity

Answer

Weight = Mass + Gravity

Answer

Weight = Mass - Gravity

Answer

Weight = Mass / Gravity

Question 15

An astronaut weighs 104 newtons on the moon, where the strength of gravity is 1.6 newtons per kilogram. What is her mass?

Accepted Answer

65 kg

Answer

104 kg

Answer

1.6 kg

Answer

160 kg

Question 16

Which object has more inertia: a bowling ball or a tennis ball?

Accepted Answer

Bowling ball

Answer

Tennis ball

Answer

Both have the same inertia

Answer

It depends on the speed

Question 17

What is Newton's first law?

Accepted Answer

Law of inertia

Answer

Law of universal gravitation

Answer

Law of acceleration

Answer

Law of action and reaction

Question 18

What is Newton's second law?

Accepted Answer

F = ma

Answer

$$E = mc^2$$

Answer

a = F/m

Answer

F = mv

Question 19

What is Newton's third law?

Accepted Answer

For every action, there is an equal and opposite reaction

Answer

Objects in motion stay in motion

Answer

F = ma

Answer

Energy cannot be created or destroyed

Question 20

You are riding on a train, the train suddenly stops and the passengers fall forward. Which law is being used?

Accepted Answer

Newton's first law

Answer

Newton's second law

Answer

Newton's third law

Answer

Law of gravitation

Question 21

You hit a nail with a hammer, the hammer flies back when you hit the nail. Which law is being used?

Accepted Answer

Newton's third law

Answer

Newton's first law

Answer

Newton's second law

Answer

Law of gravitation

Question 22

There is a book lying on the table, if no one touches the book, the book will not move. Which law is being used?

Accepted Answer

Newton's first law

Answer

Newton's second law

Answer

Newton's third law

Answer

Law of gravitation

Question 23

You kick a soccer ball and the ball accelerates at a rate of 6 m/s squared. Which law is being used?

Accepted Answer

Newton's second law

Answer

Newton's first law

Answer

Newton's third law

Answer

Law of gravitation

Question 24

If you push a sled on snow, the force you exert makes it move. The larger the sled (mass) the more force you will need to make it accelerate. Which law is being used?

Accepted Answer

Newton's second law

Answer

Newton's first law

Answer

Newton's third law

Answer

Law of gravitation

Question 25

The force of a moving object causes the object at rest to move in the direction of the force.

Accepted Answer

True

Answer

False

Question 26

Force is measured in

Accepted Answer

Newton (N)

Answer

Joule (J)

Answer

Kilogram (kg)

Answer

Pound (lb)

Question 27

Mass is measured in

Accepted Answer

kilograms or grams

Answer

liters

Answer

meters

Answer

joules

Question 28

What is gravity on Earth?

Accepted Answer

9.8 N/kg

Answer

90.8 N/kg

Answer

8.5 N/Kg

Answer

10 N/Kg

Question 29

Car safety experts say that half of deaths in car accidents would have survived if they wore their seatbelts.

Accepted Answer

True

Answer

False

Question 30

Unbalanced forces-

Accepted Answer

Unbalanced forces result in a change in motion.

Answer

Unbalanced forces have no effect on motion.

Answer

Unbalanced forces always cancel each other out.

Answer

Unbalanced forces only act on stationary objects.

Question 31

Balanced forces-

Accepted Answer

Result in no change in motion

Answer

Balanced forces are always in motion.

Answer

Balanced forces result in acceleration.

Answer

Balanced forces are unequal in magnitude.

PS Unit 5

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