RC 2

Newton’s first law of motion, applied to a book sitting on a table, would explain that the book will not move until which of the following conditions is met?

• Gravity on the book can be reduced to zero

• Unbalanced forces act on the book

• Balanced forces act on the book

• Friction being exerted on the book

How does the force required to accelerate an object change as the mass increases?

• mass increases, force remains the same

• mass increases, force decreases

• mass increases, force increases

• mass increases, force doubles

Tags

NGSS.HS-PS2-1

How does the acceleration of an object change as the force applied to the object increases?

• force increases/ acceleration increases

• force increases/ acceleration decreases

• force decreases/ acceleration decreases

• force decreases/ acceleration increases

Tags

NGSS.HS-PS2-1

According to Newton’s Law of Inertia, which of the following objects will change its motion?

• A bike rider on a smooth and level road, pedaling at a constant rate.

• A train pulling on another train, each with the same amount of force.

• A chair sitting on the floor with balanced forces acting in opposite directions.

• A ball rolling across the floor with friction acting in the opposite direction.

Tags

NGSS.MS-PS2-2

A bowling ball is rolled with a certain speed and strikes a bowling pin with a force indicated by the arrow in this illustration. When the bowling ball strikes the bowling pin, the force applied by the pin to the ball -

• depends on the mass of the bowling pin.

• is equal to the force applied by the ball.

• must be zero, since the pin is not moving.

• is equal to the force of gravity on both.

Tags

NGSS.MS-PS2-1

Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?

• The car with the smaller mass will require less forces to stop than the car with the larger mass.

• The car with the larger mass will amintain its velocity while traveling down the hill.

• The car with the smaller mass will take longer to stop than the car with the larger mass.

• The car with the larger mass will have less inertia than the car with the smaller mass.

Tags

NGSS.MS-PS2-2

A 70-kg adult and a 35-kg child face each other on ice skates. Applying Newton’s Laws of Motion, what will happen if the two skaters push against each other?

• The adult will move backward, and the child will not move.

• The adult will not move, and the child will move backward.

• They will both move backward at the same speed.

• They will both move backward, but the child will move at a faster speed.
  

Tags

NGSS.MS-PS2-1

The masses of four objects are given in this table. If all of the objects have the same acceleration, which will require the greatest force?

• Object 1

• Object 2

• Object 3

• Object 4

Tags

NGSS.MS-PS2-2

The acceleration of an object depends on ?

• The amount of Force applied

• The mass of an object

• The mass of an object and the amount of force applied

• None of these

Tags

NGSS.MS-PS2-2

I throw two objects (A&B) of equal mass. Object B moves quicker and farther than the other. What was the difference?

• I applied more force to Object A

• I applied the same force to both

• I applied more force to Object B

• Object A was bigger

Tags

NGSS.MS-PS2-2