Identifying Newton's Laws

Which law explains that it would take more force to push the car than the lawnmower?

• 1st

• 2nd

• 3rd

Tags

NGSS.MS-PS2-2

There is a skateboard rolling and then Billy steps on it and it stops. What Law of motion is this?

• 3rd

• 2nd

• 1st

If we put the same force on a bowling ball and a soccer ball, the soccer ball will move faster! Which law explains this?

• 1st

• 2nd

• 3rd

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Watch as I propel the washers across the desk. Observe what happens as I use different amounts of force.

• Newton's 1st Law, inertia

• Newton's 2nd Law, Force = m x a

• Newton's 3rd Law, action/reaction

Answer explanation

The more force I used, the greater the acceleration of the washers, and the further they traveld.

Tags

NGSS.MS-PS2-2

The girl on the sled will remain in motion unless

• her motion is changed by magnetic forces.

• she is stopped by an outside force.

• she accelerates at a constant speed.

• the force of friction forcer her to move faster.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A car is driving at a constant velocity of 75 m/s on the highway headed to Tucson, on a windy day. What is the force acting upon it to continue it's state of motion?

• 0 N, due to "the constant velocity" which means the car is already moving. It does not need force to continue it's state of motion.

• Really? This question again? Obviously it is 75 m/s because of one of Newton's Laws.

• Wait, I do know, I just don't know how to explain it. But, It is one of the laws... right?

• 75 N to the right, due to action and reaction, as well as inertia.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is required for an object to begin moving from rest?

• A balanced force

• An unbalanced force

• No force

• A decrease in mass

Tags

NGSS.MS-PS2-2

If an object is moving with a constant velocity, what can we infer about the forces acting on it?

• There are no forces acting on it.

• The net force acting on the object is zero.

• The object is experiencing a constant force in the direction of motion.

• The object is accelerating.

A soccer ball is sitting in the middle of a field. The ball will remain at rest until an outside force like a players foot or the wind acts upon it. Which of Newton's laws is represented by this?

• 1st

• 2nd

• 3rd

Sally jumps on her trampoline. She exerts a force on the trampoline and the trampoline exerts an equal but opposite force back on Sally. This represents

• Law 1

• Law 2

• Law 3

Tags

NGSS.MS-PS2-1