1st law

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

Tags

NGSS.MS-PS2-2

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

• slowing motion in a straight line
• accelerating motion in a straight line
• constant motion in a straight line
• constant motion in an unpredictable direction

Tags

NGSS.MS-PS2-2

One object has twice as much mass as another object. The first object also has also twice as much...

• velocity
• gracitational acceleration
• inertia
• all of these

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Why does an 18-wheeler have more inertia than a bicycle?

• it has more mass
• it has more volume
• it is not as aerodynamic

Tags

NGSS.MS-PS2-2

Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?

• Balanced
• Unbalanced

Tags

NGSS.MS-PS2-2

What is inertia?

• the force that opposes motion
• the force of attraction between 2 objects
• an object's tendency to stay in motion or to stay at rest
• a change in an object's speed and/or direction

Tags

NGSS.MS-PS2-2

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

• Jessica's body flies forward after she hits the brakes

• Jessica drives a car

• Jessica is at a road crossing

• Jessica is sleeping

You are riding on a rollercoaster and the ride is nearing its end. As the ride car pulls into the start/finish area, the cruel conductor suddenly engages the brakes. What will your body do and WHY?

• Move forward because you are at rest and want to remain at rest

• Move forward because you are in motion and want to stay in motion

• Move backward because you are in motion and want to stay in motion

• Move backward because you are at rest and want to remain at rest

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

You are at an amusement park at the top of a drop tower. You hear a couple of clicks and then you plummet (accelerate) towards the ground and your body suddenly moves off the seat (up) when you start to descend. Why does this occur?

• Magic.

• Gravity causes your body to move upward.

• You are in motion and want to stay in motion.

• Your are at rest and wish to remain at rest.

What does a seatbelt do to a passengers inertia?

• It becomes one with the car
• It is separate than the car
• The inertia decreases
• The inertia stays the same