Unit 2 Forces and Motion

A spaceship moving in the vacuum of space will

• move at constant velocity until acted upon by a force

• slow down to a stop due to air resistance

• require constant energy to move

• remain still

Answer explanation

Newton's 1st Law of Motion: An object in motion will remain in motion, unless acted upon by an unbalanced force.

Tags

NGSS.MS-PS2-2

John is running on a track. What is the major difference between his speed and his velocity?

• There is no difference

• Velocity includes both his speed and the direction in which he is running

• Speed includes both his velocity and the direction in which he is running

• His speed is constant

Answer explanation

Velocity is a vector quantity meaning it includes both the magnitude and direction

Which of the following is a velocity?

• 10 m/s

• 10 N

• 10 m/s²

• 10 m/s, South

What is the velocity of a car that 30 meters West in 3 seconds?

• Not enough information

• 90 m/s, West

• 10 m/s, West

• 10 m/s

Acceleration is the …

• rate of change in the velocity of an object

• shortest distance traveled between an initial and final point

• rate at which an object changes position

• rate at which an object changes position when traveling in a certain direction

How is acceleration calculated?

• Distance/Time

• Speed x Time

• Distance x Time + Direction

• Change in Velocity/ Time

What type of force results from charged particles?

• Push Force

• Gravitational Force

• Electromagnetic Force

• Contact Force

Tags

NGSS.HS-PS2-4

What determines the momentum of an object?

• Speed and Direction

• Velocity and Mass

• Velocity and Distance

• Speed and Velocity

Tags

NGSS.MS-PS3-1

A push or a pull describes

• force

• an object speeding up

• an object slowing sown

• an object changing direction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A baseball sitting on tee will

• roll off by itself due to gravity

• never move due to inertia

• only move if acted on by an unbalanced force

• accelerate by itself

Answer explanation

Newton's 1st Law: An object at rest will remain at rest unless acted upon by an unbalanced force

Tags

NGSS.MS-PS2-2