Physics Force Concepts Quiz

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What is a force?

A change in velocity
A reaction to an action
An object in motion
A push or a pull (correct)

Friction is a type of force.

True (A)

Name one situation where a force is applied to an object.

Kicking a ball

A body is said to be ___ when a force is applied in a direction away from the person applying the force.

pushed Signup and view all the answers

Match the following actions with their corresponding force types:

Kicking = Push Pulling = Pull Squeezing = Push Lifting = Push Signup and view all the answers

Which of the following actions is an example of applying a force?

Pushing a car (A) Signup and view all the answers

An object will move on its own without the need for any force.

False (B) Signup and view all the answers

What happens when two objects interact?

A force is created. Signup and view all the answers

When you _____ an object, you apply a force to it.

push or pull Signup and view all the answers

Match the following actions with their corresponding descriptions:

Pushing = Applying force to move away from oneself Pulling = Applying force to move towards oneself Lifting = Raising an object against gravity Stopping = Ceasing the motion of an object Signup and view all the answers

What happens when two forces act in the same direction on an object?

The resultant force is equal to the sum of the two forces. (A) Signup and view all the answers

When two equal forces act in opposite directions, the resultant force is zero.

True (A) Signup and view all the answers

What is the unit of force used to express magnitude?

Newtons Signup and view all the answers

A force of _____ Newtons is equal to the gravitational force acting on a 1 kg mass.

9.8 Signup and view all the answers

Match the following effects of forces with their descriptions:

Making a stationary object move = Applying a force causes movement Changing the speed of a moving object = Force alters motion speed Changing the direction of a moving object = Force redirects the object's path Resultant force = Sum or difference of acting forces Signup and view all the answers

Which of the following is NOT a type of contact force?

Magnetic force (D) Signup and view all the answers

Electrostatic force is a type of contact force.

False (B) Signup and view all the answers

What is the primary role of friction in contact forces?

To resist motion between two surfaces in contact. Signup and view all the answers

Muscular force is created by ______.

muscles Signup and view all the answers

Match the following contact forces with their descriptions:

Friction = Resists the motion of sliding surfaces Muscular force = Generated by muscle contractions Electrostatic force = Attraction or repulsion between charged objects Signup and view all the answers

What type of force opposes the motion of one body over another?

Frictional Force (A) Signup and view all the answers

Muscular forces can only be applied in pushing actions.

False (B) Signup and view all the answers

What are the two main categories under which forces can be classified?

Contact forces and non-contact forces Signup and view all the answers

The force exerted by the electric charge produced when a plastic comb is rubbed against hair is known as ___.

electrostatic force Signup and view all the answers

What is the primary aim of the demonstration described?

To demonstrate that pressure depends on the magnitude of the force (C) Signup and view all the answers

A lighter force will cause a nail to sink deeper into the sand.

False (B) Signup and view all the answers

Who was the scientist associated with the concept of pressure in the demonstration?

Blaise Pascal Signup and view all the answers

Pressure is defined as the force applied per unit of __________.

area Signup and view all the answers

Match the following components of the experiment with their roles:

Nails = Provide force to sink into the sand Wooden board = Supports the nails Sand container = Absorbs the pressure from the nails White paint = Marks the force applied by each nail Signup and view all the answers

Why does pin A penetrate more deeply than pin B in the demonstration?

Pin A has a pointed end, concentrating force on a smaller area (B) Signup and view all the answers

Camels are more prone to sinking in sand than horses due to their broader feet.

False (B) Signup and view all the answers

What is one reason army tanks use wide steel tracks instead of wheels?

To spread the weight over a larger surface area and reduce pressure on the ground. Signup and view all the answers

Wide bases and foundations of tall buildings help distribute the weight and thus the ______.

pressure Signup and view all the answers

Match the following examples with their explanations:

Camels = Prevent sinking in sand due to broader feet Army Tanks = Reduce pressure with wide steel tracks Buses and Trucks = Distribute force using wider tires High Buildings = Distribute weight using wide bases Signup and view all the answers

What happens to the pressure of a liquid as the depth increases?

It increases (B) Signup and view all the answers

A pressure detector consists of a single tube connected to a gas tap.

False (B) Signup and view all the answers

Explain why pressure in a liquid increases with depth.

The weight of the liquid above exerts greater pressure as depth increases. Signup and view all the answers

As you go in a liquid, the pressure .

deeper, increases Signup and view all the answers

Match the following types of pressure measurements with their descriptions:

Pressure Detector = A device that measures pressure using a U-tube Atmospheric Pressure = The pressure exerted by the weight of the atmosphere Hydrostatic Pressure = Pressure exerted by a fluid at rest due to its weight Liquid Pressure = Pressure exerted by the weight of a liquid column above a point Signup and view all the answers

What is the result when two pieces of straw, one rubbed with paper, are brought near each other without touching?

They repel each other. (D) Signup and view all the answers

Gravitational force pulls objects away from the Earth.

False (B) Signup and view all the answers

What does the force of gravity give to an object?

Weight Signup and view all the answers

Pressure is exerted equally in all _______.

directions Signup and view all the answers

Match the following forces with their examples:

Electrostatic force = Straws attracting each other Gravitational force = An object falling to the ground Frictional force = Sliding a book across a table Pressure = Water pushing against the walls of a container Signup and view all the answers

What happens to the weight of an object on the moon compared to Earth?

It decreases to approximately 1/6th. (C) Signup and view all the answers

The SI unit of force is called the Pound.

False (B) Signup and view all the answers

The weight of an object is measured using a ________ balance.

spring Signup and view all the answers

What causes the balloon to bulge when water is poured into the vessel?

The water exerts pressure on the balloon. (C) Signup and view all the answers

Gases do not exert pressure on the walls of their containers.

False (B) Signup and view all the answers

What happens to a balloon when too much air is blown into it?

The balloon bursts. Signup and view all the answers

When air is blown into a balloon, it causes the balloon to _____ due to the pressure exerted by the gas inside.

expand Signup and view all the answers

Match the following scenarios with the outcomes related to pressure exerted by gases:

Inflating a balloon = Pressure increases inside the balloon Pouring water into a vessel = Balloon bulges Too much air in a balloon = Balloon bursts Gas in a sealed container = Pressure exerts on container walls Signup and view all the answers

Force

A push or a pull that can change an object's motion or direction.

Examples of forces

Pushing, pulling, picking, opening, and other actions are examples of applying force.