Motion and Stability Quiz

What is the relationship between force and motion?

• Force has no effect on motion.

• Force is inversely proportional to motion.

• Force is directly proportional to motion.

• Force causes motion in the opposite direction.

What is the difference between speed and velocity?

• Speed and velocity are the same thing.

• Speed is a scalar quantity, while velocity is a vector quantity.

• Velocity is the distance traveled per unit time, while speed is the rate of change of velocity.

• Velocity includes direction, while speed does not.

How does acceleration affect an object's motion?

• Acceleration always causes an object to move in a straight line

• Acceleration changes an object's velocity and can cause it to speed up, slow down, or change direction.

• Acceleration only affects an object's speed, not its direction

• Acceleration has no effect on an object's motion

Define friction and explain its role in motion.

• Friction is a force that opposes the motion of an object.

• Friction is a force that only affects stationary objects.

• Friction is a force that assists the motion of an object.

• Friction is a force that has no effect on the motion of an object.

What are the different types of friction?

• thermal friction, electrical friction, gravitational friction

• dynamic friction, static friction, rolling friction

• kinetic friction, magnetic friction, air friction

• static friction, sliding friction, rolling friction, and fluid friction

How does air resistance affect the motion of objects?

• Air resistance increases the speed of objects.

• Air resistance opposes motion and slows down objects.

• Air resistance has no effect on the motion of objects.

• Air resistance causes objects to move in a straight line.

How does the force of gravity affect an object's motion?

• Gravity affects an object's motion by pulling it towards the center of the Earth or towards another massive object.

• Gravity only affects the motion of objects in space

• Gravity pushes an object away from the center of the Earth

• Gravity has no effect on an object's motion

An object is _____ if its position changes.

• in motion

• at rest

• a reference point

• a frame of reference

Reference point is

• moving

• non moving

• changing

• speed

Which one of the following expresses velocity?

• Kevin is moving North.

• Kevin drove Northeast at 45 mph.

• Kevin rode his bicycle 20 mph.

• Kevin will ride his bike to Northside Playground and catch a ride for the 45 mile trip.