Physics Test Review-Science 8

What is the definition of FORCE?

• a push or a pull

• Mass
• Velocity
• Energy

What is the definition of INERTIA?

• The resistance of an object to any change in its motion.
• The speed at which an object moves.
• The force that causes an object to move.
• The ability of an object to move without any force applied to it.

What is the definition of SPEED?

• The definition of SPEED is the rate at which an object covers distance in a given amount of time.

• The definition of SPEED is the rate at which an object covers time in a given amount of distance.
• The definition of SPEED is the rate at which an object covers distance in a given amount of space.
• The definition of SPEED is the rate at which an object covers distance in a given amount of energy.

What is the definition of VELOCITY?

• Velocity is a measure of the distance traveled by an object.
• Velocity is a measure of the force exerted by an object.
• Velocity is a measure of the size of an object.
• Velocity is a measure of the rate of change of an object's position with respect to time.

Describe 3 ways an object can accelerate​ (a)   ​ (b)   ​ (c)  

• speed up
• slow down
• change direction
• stop

What is the main difference between speed and velocity?

• Speed has direction, whereas velocity does not

• Speed is measured in meters per second, while velocity is measured in kilometers per hour.
• Speed and velocity are the same thing.
• Speed and velocity both have magnitude and direction.

According to Newton's Law of Motion, what does it describe?

• The relationship between the motion of an object and the forces acting upon it

• The relationship between the mass of an object and its acceleration

• The relationship between the speed of an object and its position

• The relationship between the temperature of an object and its volume

What is the relationship between force and acceleration according to Newton's Law of Motion?

According to Newton's Law of Motion, which law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass?

• First law

• Second law

• Third law

• Fourth law

Similarly, the greater the mass of an object, the smaller its acceleration will be for a given ___.