M2.2 Cat A Force and Motion

What is the difference between force and motion?

• Force is the cause of motion, and motion is the effect of force.

• Force is the opposite of motion

• Force and motion have no relationship

• Force and motion are the same thing

Explain Newton's first law of motion.

• An unbalanced force is not required to change the motion of an object

• An object at rest will start moving on its own

• An object at rest will stay at rest, or an object in motion will stay in motion with the same speed and in the same direction, unless acted upon by an unbalanced force.

• An object in motion will slow down and stop eventually

Give two examples of an object experiencing balanced forces.

• A car accelerating on a straight road

• A person pushing a heavy box across the floor at constant speed and direction

• A rocket launching into space

• A book resting on a table with no external forces acting on it.

What is the formula to calculate force?

Describe the relationship between force and acceleration.

• Force and acceleration are unrelated

• The relationship between force and acceleration is described by Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• Acceleration is directly proportional to distance, not force

• The relationship between force and acceleration is described by Newton's first law of motion

What is inertia and how does it relate to motion?

• Inertia only applies to objects in outer space and has no effect on motion on Earth

• Inertia is the same as momentum and has no relation to motion

• Inertia is the tendency of an object to resist changes in its motion. It relates to motion by causing objects to maintain their current state of motion (either at rest or moving at a constant velocity) unless acted upon by an external force.

• Inertia is the force that causes objects to speed up or slow down

Explain the concept of friction and its effect on motion.

• Friction is only present in liquids, not in solids

• Friction is the force that opposes the motion of an object when it is in contact with another object. It can either slow down or stop the motion of the object.

• Friction only affects the direction of motion, not the speed

• Friction is the force that increases the speed of an object in motion

How does air resistance affect the motion of objects?

• Air resistance reduces the speed and can change the direction of the motion of objects.

• Air resistance increases the speed of the motion of objects.

What is the difference between mass and weight?

• Mass is the force exerted on an object due to gravity, while weight is a measure of the amount of matter in an object

• Mass is a measure of the amount of matter in an object, while weight is the force exerted on an object due to gravity.

• Mass and weight are essentially the same and can be used interchangeably

• Mass is only applicable in outer space, while weight is only applicable on Earth

Describe the concept of momentum and its relationship to force and motion.

• Momentum is the same as inertia and has no relationship to force and motion

• Force and motion have no impact on an object's momentum

• Momentum is the product of an object's mass and its velocity.

• Momentum is only related to speed and has no connection to force