Action and Reaction Pairs Newton's Third Law

How does Newton's Third Law apply to rocket propulsion?

• Rockets push exhaust gases backward, and in response, the rocket moves forward.

• Rockets use fuel to create a vacuum that pulls them forward.

• Rockets rely on the Earth's gravity to propel them upwards.

• Rockets generate lift by pushing against the air around them.

Tags

NGSS.MS-PS2-1

What is Newton's Third Law of Motion?

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

• An object in motion stays in motion unless acted upon by an external force.

• The force of gravity is proportional to the mass of the objects involved.

• The acceleration of an object is directly proportional to the net force acting on it.

Tags

NGSS.MS-PS2-1

What happens when a bus hits a bug?

• The bus exerts a greater force than the bug.

• The forces exerted by the bus and the bug are the same in magnitude but opposite in direction.

• The bug exerts a greater force than the bus.

• The bus and the bug do not exert any force on each other.

Tags

NGSS.MS-PS2-1

What is an example of a situation where Newton's Third Law is observed?

• When a swimmer pushes water backward, they move forward.

• When a car accelerates forward, the tires push backward on the road.

• When a rocket launches, it pushes exhaust gases downward.

• When a person jumps off a diving board, they fall into the water.

Tags

NGSS.MS-PS2-1

What is an example of action and reaction pairs?

• When you push against a wall, the wall pushes back with an equal force.

• A car accelerating forward while the tires push backward against the road.

• A person jumping off a diving board and the board pushing them up.

• A balloon flying away when air is released from it.

Tags

NGSS.MS-PS2-1

What happens to a boat when a person steps off it?

• The boat moves backward as the person moves forward due to action-reaction forces.

• The boat remains stationary regardless of the person's movement.

• The boat tips over and sinks immediately.

• The boat moves forward as the person steps off.

Tags

NGSS.MS-PS2-1

What is the formula for force?

• Force = mass + acceleration (F = m + a)

• Force = mass x acceleration (F = ma)

• Force = mass / acceleration (F = m / a)

• Force = mass - acceleration (F = m - a)

Tags

NGSS.MS-PS2-2

If a cannon fires a cannonball, what can be said about the forces involved?

• The forces are equal and opposite.

• The forces are unequal and in the same direction.

• The forces are random and unpredictable.

• The forces are only present during the firing.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is inertia?

• The force that causes an object to move in a circular path.

• The tendency of an object to resist changes in its state of motion.

• The speed at which an object travels in a straight line.

• The gravitational pull exerted by an object on another object.

What is the effect of a large mass colliding with a small mass?

• The forces are equal, but the effects (acceleration) differ due to the difference in mass.

• The larger mass will always move faster after the collision.

• The smaller mass will absorb all the energy from the larger mass.

• The larger mass will crush the smaller mass without any effect on its motion.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5