Forces and Motion Copy

A push or a pull that can move an object is a __________.

• gear
• lever
• force
• machine

Tags

NGSS.3-PS2-1

Which statement about the force of gravity is true?

• The smaller the masses of the two objects, the larger the effects of gravity between them.
• The smaller the distance between two objects, the larger the force of gravity between them.
• Distance affects the force of gravity, but mass does not.
• Mass affects the force of gravity, but distance does not.

Which of Newton Laws applies:
A rocket launches by sending gases downward towards the ground causing the rocket to move upward.

• Equal and Opposite Reaction
  
• Law of Inertia
• Force equals mass times acceleration.
• I don't know.

Because of inertia, an object tends to move ________.

• towards a larger object
• in a curved path
• away from a larger object
• in a straight path

The force that opposes the motion of two surfaces sliding past each other is called ___________.

• acceleration
• inertia
• friction
• unbalanced

________ is an object's tendency to travel in a straight line or to resist motion.

• Inertia
• Acceleration
• Mass
• Gravity

Average speed is found by __________.

• dividing the total distance traveled by the total time
• multiplying the displacement by the time spent
• multiplying the total distance traveled by the time spent
• subtracting the time spent traveling from the total distance traveled

The direction and speed of an object is an object's _________.

• velocity
• average displacement
• average speed
• displacement

The force resulting from the pull of the earth on an object.

• mass
• gravity
• acceleration
• unbalance

Tags

NGSS.MS-PS2-4

Where in the universe does gravity act?

• nowhere
• only on Earth
• only between the Sun and planets
• everywhere