Quiz 1 Newtons Law of Motion

Newton's First law that says an object at rest will remain at rest unless acted upon by an unbalanced force is also called the law of a _________.

• May the force be with you

• Action and reaction

• Acceleration

• Inertia

An object is resting motionless in a surface. According to newtons first law, the object will only start to move if_______.

• Two forces that are equal and opposite are applied to the object

• An unbalanced force is applied to the object

• The net force on the object is equal to zero

• The upward force of the object is equal to its acceleration

Tags

NGSS.MS-PS2-2

A student throws a ball against a wall. Which statement best explains what is happening in the picture.

• The force from the wall on the ball is equal and opposite to the force from the ball on the wall.

• The energy of the ball is destroyed as it strikes the wall.

• The energy of the ball becomes negative as it hits the wall.

• The force exerted by the ball on the wall is greater than the force exerted by the wall on the ball.

Tags

NGSS.MS-PS2-1

Two objects are connected by a rope over a pulley. According to Newton's Second Law of Motion, the masses will start to move if the

• acceleration of object 1 is greater than acceleration of object 2

• acceleration of object 2 is greater than acceleration of object 1

• mass of object 1 is greater than the mass of object 2

• mass object 2 is greater than the mass of object 1

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which statement best explains Newton's Third Law of Motion?

• An object at rest tends to stay at rest.

• The acceleration of an object is based on the force applied.

• An object continues its motion until an unbalanced force is applied.

• For every action there is an equal and opposite reaction.

Tags

NGSS.MS-PS2-1

Which is the best example of Newton's First Law of Motion?

• a basketball thrown in the air falls to the ground

• a baseball player swings at an approaching ball

• an ice skater pushes back from a wall and moves backwards

• a soccer ball remains motionless until it is kicked by a player

As the wheels of a train push down on the track, the track pushes back against the wheels. Which of Newton's laws is used to explain these forces.

• Any 2 objects exert a gravitational force of attraction on each other.

• The net force of an object is its mass times its acceleration.

• An object at rest tends to stay at rest unless acted upon by an unbalanced force.

• For every action, there is an equal and opposite reaction

Tags

NGSS.MS-PS2-1

Which example best explains Newton's Third Law of Motion?

• When a glass slid across a table, it spilled water when it stopped suddenly.

• An engine used less work to move a lighter car than when it moved a heavier car.

• When you sit on a chair, your body exerts a downward force on the surface of the chair, while the chair exerts an equal and upward force on your body.

Tags

NGSS.MS-PS2-1

A truck that is travelling at a constant speed is carrying some boxes. If the truck comes to a sudden stop, what will most likely happen to the boxes?

• They will slide toward the front of the truck.

• They will slide toward the back of the truck.

• They will fall off the side of the truck.

• They will stay in the middle of the truck.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Object X has twice the mass of Object Y. Both objects are accelerating at the same rate. Which statement best describes the motions of Object X and Object Y.

• Object X requires twice the force to accelerate at the same rate as Object Y.

• Object X requires half the force to accelerate at the same rate as Object Y.

• Object X is travelling at half the speed as Object Y.

• Object X is travelling at twice the speed as Object Y.

Tags

NGSS.MS-PS2-2