Newton's Laws

Front

What is the shape of a projectile's trajectory?

Back

a parabola

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Front

A boy pushes on a heavy box, but it does not move. What force is resisting the boy's push?

Back

static friction

Front

Neglecting air resistance, the horizontal velocity of a projectile

Back

it is constant

Front

Which of the following is not true about the force of friction?

• it opposes motion
• it acts between any two solid bodies that are in contact
• it acts only on objects that are at rest
• it can act on a solid body that is traveling through a liquid

Back

it acts only on objects that are at rest

Front

What effect does the force of gravity have on a projectile while it is in the air?

Back

The force of gravity produces a downward acceleration.

Tags

NGSS.HS-PS2-4

Front

Kinetic friction acts on two bodies that are ____ relative to each other.

Back

moving

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Front

What affects the vertical velocity of a projectile over time?

Back

the acceleration due to gravity

Tags

NGSS.MS-PS2-4

Front

Which physical law most directly describes the motions of objects that are acted on by forces?

Back

Newton's second law of motion

Tags

NGSS.MS-PS2-2

Front

According to Newton's law of universal gravitation, which change increases the gravitational force between two massive objects the most?

• Doubling the distance between them
• Halving the distance between them
• Doubling one of the masses
• Halving one of the masses

Back

Halving the distance between them

Tags

NGSS.HS-PS2-4

Front

In which case are Newton's laws not valid? Options: for a moving object inside a train that is rounding a bend, when an object is sitting on the floor at rest, when an object in motion is subject to a force, for a stationary object on a table

Back

for a moving object inside a train that is rounding a bend

Tags

NGSS.HS-PS2-1