Forces and Motion

Front

The force that opposes motion because of resistance between bodies in contact

Back

Friction

Answer explanation

Friction is the force that opposes motion due to resistance between surfaces in contact. It acts to slow down or stop the movement of objects, making it the correct answer to the question.

Front

The force you get when a material like a rope or string is being      stretched

Back

Tension

Answer explanation

The force experienced when a rope or string is stretched is called tension. It acts along the length of the material, pulling equally on both ends, which distinguishes it from other forces like friction or gravity.

Front

The force that enables compasses to work

Back

Magnetism

Answer explanation

The correct answer is magnetism, as compasses work by aligning a magnetic needle with the Earth's magnetic field, allowing them to indicate direction.

Front

The force you get when an object moves     through air

Back

Air resistance

Answer explanation

The force experienced when an object moves through air is known as air resistance. It opposes the motion of the object, making it the correct answer compared to other forces like gravity or electrostatic forces.

Front

The force that exists between all objects      with mass

Back

Gravity

Answer explanation

Gravity is the force that exists between all objects with mass, pulling them towards each other. It is a universal force, unlike nuclear, air resistance, or electrostatic forces, which act under specific conditions.

Front

The sum of all forces acting on an object and direction is called the

Back

Net Force

Answer explanation

The net force is the vector sum of all forces acting on an object, determining its motion. Balanced forces result in no net force, while unbalanced forces cause acceleration. Thus, the correct answer is net force.

Front

Are the forces balanced or unbalanced?

Back

Unbalanced

Answer explanation

The forces are unbalanced because there is a net force acting on the object, causing it to accelerate. Balanced forces would result in no change in motion, which is not the case here.

Front

Forces have both ________ and direction.

Back

Magnitude

Answer explanation

Forces are defined by both magnitude, which indicates how strong the force is, and direction, which shows where the force is applied. Therefore, the correct answer is 'Magnitude'.

Front

Name the missing force. Options: Gravitational Force, Normal Force, Friction Force, Applied Force

Back

Normal Force

Answer explanation

The Normal Force is the support force exerted by a surface perpendicular to an object resting on it. It counteracts gravity and is essential for maintaining equilibrium, making it the correct missing force in this context.

Front

Name the missing force. Options: Normal Force, Push/Pull Force, Friction Force, Tension Force

Back

Friction Force

Answer explanation

The missing force is the Friction Force, which opposes the motion between surfaces in contact. It plays a crucial role in everyday activities, such as walking or driving, by preventing slipping.