PS Chapter 12

When a moving basketball hits the backboard, some of the ball's momentum

• is lost

• is transferred to the backboard

• doubles in force

• increases the backboard's mass

Every object maintains constant velocity unless acted on by an unbalanced force is Newton's ____ of Motion.

• 1st Law

• 2nd Law

• 3rd Law

• 9th Symphony

Mass and _____ determine the gravitational force between two object.

• Distance

• Size

• Speed

• Acceleration

Which object has the greatest inertia?

• a compact car

• a motorcycle

• a pick-up truck

• a bus

What determines an object's momentum?

• mass and size

• weight and acceleration

• mass and velocity

• mass and weight

The SI unit of force is called the

• peso

• newton

• drachma

• einstein

Newton's law that states that the unbalanced force acting on an object is equal to the object's mass times its acceleration is

• 1st Law of Motion

• 2nd Law of Motion

• 3rd Law of Motion

• 7th Wonder of the World

At what point is a skydiver in freefall?

• Immediately after the parachute is opened.

• After the amount of air resistance is equal to the gravitational force exerted on the skydiver.

• As soon as the skydiver jumps out of the plane.

• Right before the skydiver lands on the ground.

Which of the following is an example of projectile motion?

• A beach ball rolling along the sand

• A dart thrown at a dart board

• A car accelerating through a yellow light

• A bowling ball rolling toward pins

If air resistance was not a factor, how would the acceleration of a 2 kg ball and the acceleration of a 20 kg rock differ if the objects were dropped from the same height?

• The ball would accelerate ten times as fast as the rock.

• The rock would accelerate ten times as fast as the ball.

• They would not differ, they would fall at the same acceleration.

• The ball would accelerate twice as fast as the rock.