VARIOUS FORCES

What is the key difference between a scalar and a vector quantity?

• A scalar has direction, while a vector has magnitude.

• A vector has direction, while a scalar has magnitude.

• A scalar and a vector are the same.

• A scalar has no magnitude, while a vector has both magnitude and direction.

Which of the following is an example of a scalar quantity?

• Force

• Time

• Velocity

• Acceleration

If two forces of 5 N and 10 N act in the same direction, what is the resultant force?

• 5 N

• 10 N

• 15 N

• 20 N

What force allows a boat to float on water?

• Gravity

• Buoyant force

• Friction

• Magnetic force

Which of the following is a vector quantity commonly used in daily life?

• Temperature

• Speed of a car

• Direction of a compass

• Amount of water in a bottle

Which of the following does not belong to the group?

• Energy

• Time

• Volume

• Velocity

Which of the following is an example of magnetic force?

• A ball falling to the ground

• A compass needle pointing north

• A person walking on the ground

• A car accelerating on a flat road

What is the primary resistance force that opposes the motion of a car?

• Gravity

• Friction

• Air resistance

• Magnetic force

Three forces act on an object: 8 N upward, 10 N downward, and 6 N upward. What is the resultant force?

• 8 N upward

• 24 N downward

• 4 N upward

• 4 N downward

A rocket experiences three forces: thrust of 50,000 N upward, gravity of 40,000 N downward, and air resistance of 10,000 N downward. What is the resultant force acting on the rocket?

• The resultant force is 90 000 N, downward.

• The resultant force is 0 N.

• The resultant force is 0 N, upward

• The resultant force is 90 000 N, upward.