Acceleration and Vocabulary Words

How do we call the force that opposes the sliding motion of two surfaces that are touching each other?

• Force

• Friction

• Net Force

• Gravity

The law that states that when one object exerts a force on a second object, the second object exerts a force on the first that is equal in strength and opposite in direction is called ___________.

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Law of Universal Gravitation

The law that states that when two objects collide in a closed system, the total momentum of the two objects before the collision is the same as the total momentum of the two objects after the collision is called ____________.

• Newton's 1st Law of Motion

• Law of Conservation of Momentum

• Law of Universal Gravitation

• Newton's 2nd Law of Motion

The gravitational force exerted on an object is called ____________.

• Gravity

• Weight

• Friction

• Net Force

An attractive force between any two objects that depends on the masses of the objects and the distance between them is called ____________.

• Gravity

• Weight

• Net Force

• Law of Universal Gravitation

How do we call the maximum speed an object will reach when falling through a substance, such as air?

• Air Resistance

• Terminal Velocity

• Friction

• Free Fall

The relationship between the gravitational force between two objects, the objects’ masses, and the distance between them is called ___________.

• Gravity

• Field

• Law of Universal Gravitation

• Weight

A car goes from a speed of 8 m/hr to 24 m/hr in 3 hours. What is the acceleration of the car?

• 5.33 m/hr²

• 6.33 m/hr²

• 5.33 m/s²

• 6.33 m/s²

A bus traveling at 30 m/s, speeds up at a constant rate of 3.5 m/s² . What velocity does it reach 6.8 s later?

• 53.8 m/s

• 3.9 m/s

• 43.8 m/s

• 5.38 m/s

A region of space that has a physical quantity (such as force) at every point is called _____________.

• Gravity

• Field

• Friction

• Force