Cars and Ramps

Which of the following is true about the astronaut in the picture?

• The astronaut's weight changes depending on magnetic fields

• The astronaut has the same mass on the Earth and on the moon

• The astronaut weighs less on the moon because there is no oxygen

• The astronaut's mass changes depending on how much the moon weighs

Tags

NGSS.MS-PS2-4

A toy car pushed across the floor is observed to slow down and stop. Based on Newton's first law of motion, what is the BEST conclusion?

• An object in motion eventually stops

• The car must have been going slightly uphill

• The car did not have enough mass to keep going

• There must have been an unbalanced force acting on the toy car

Which application of Newton's laws of motion best explains the reason for using seat belts in passenger vehicles?

• The acceleration of an object is directly related to the mass of the object

• The greater the force applied to an object, the greater the speed of the object

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

• An object in motion tends to stay in motion until acted upon by an unbalanced force

Mark all correct answers that explain Newton's First Law.

• Objects at rest wish to remain at rest.

• Objects in motion want to stop moving

• Objects at rest wish to start moving

• Objects in motion want to stay in motion

• Unbalanced forces cause a change in motion

A basket of apples is pulled with a constant force. A friction force acts in a direction opposite to the motion. The basket starts at a rest and increases its speed over time. Click on each action that will reduce the rate at which the speed of the basket changes.

• Pull with less force

• Pull with more force

• Add an apple to the basket

• Take an apple out of the basket

• Roughen the surface of the table to increase friction

Tags

NGSS.MS-PS2-2

A _____________ is the unit for force.

• Gravity

• Newton

• Kilogram

• Weight

If I were standing on a train going 60 mph and drew a circle around my feet and jumped in the air, would I land back in the circle?

• Yes, according to Newton's First Law

• Yes, according to Newton's Second Law

• No, according to Newton's First Law

• No, according to Newton's Second Law

According to Newton's Second Law, how do we calculate acceleration?

• Acceleration = Force + Mass

• Acceleration = Force x Mass

• Acceleration = Force - Mass

• Acceleration = Force / Mass

Tags

NGSS.MS-PS2-2

According to Newton's Second Law, how do we calculate Force?

• Force = mass /acceleration

• Force = acceleration /mass

• Force = mass + acceleration

• Force = mass x acceleration

Tags

NGSS.MS-PS2-2

When one variable increases and the other variable increase this is called a _______________ relationship.

• Direct

• Inverse

• Vector

• Reverse