1D Dynamics Physics

The sum of all forces on an object is called

• the weight vector.

• the resultant force.

• the equilibrant force.

• the reaction force.

Tags

NGSS.MS-PS2-2

What is the minimum number of forces that must act on a system in order to have an unbalanced force on the system?

• 1 force

• 2 forces

• 0 force

• 3 forces

Tags

NGSS.HS-PS2-1

According to Newton’s second law, doubling a net force on a system of constant mass will double...

• the mass

• the acceleration

• the force

• the magnitude

Tags

NGSS.MS-PS2-2

Which scientist first stated the principle of inertia?

• Galileo Galilei

• Isaac Newton

• Albert Einstein

• James Prescott Joule

If a battery-powered car can accelerate at 14.0 m/s², how fast will it be going after 3.2 s if it started from 0.0 m/s?

• 4.375 m/s

• 10.8 m/s

• 14.0 m/s

• 44.8 m/s

Tags

NGSS.HS-PS2-1

A train is moving at a velocity of 15 m/s East. A passenger at the back of a train throws a baseball with a speed of 15 m/s West. What is the velocity of the baseball relative to the ground? (In other words: how fast does a person on the ground see the ball move?)

• 30 m/s East

• 15 m/s West

• 0 m/s

• 30 m/s West

Tags

NGSS.MS-PS3-5

A dog and a cat are about to fight, running towards each other, both at 12 m/s. What are their velocities relative to each other?

• 12 m/s

• 24 m/s

• 0 m/s

• 6 m/s

Tags

NGSS.MS-PS2-1

Vector quantities need both a magnitude and a _____.

• distance

• displacement

• direction

• velocity

Is this a scalar quantity or a vector quantity?
A deer running 15 meters per second due west

• Scalar

• Vector

Objects in a state of motion (either moving or at rest) tend to remain that way. According to Galileo is the:

• Remaining State of Motion

• Natural state of Motion

• Acceleration of Motion

• Galilei State of Motion