motion/newton's laws

If you double the mass of an object with the same force apply on it, the acceleration will

• double
• cut in half
• the same
• zero

Tags

NGSS.MS-PS2-2

What kind(s) of objects have inertia?

• all objects with mass
• only objects at rest
• only objects in motion
• only objects whose motion is being changed

A 20 kg bike accelerates at 10 m/s².  what was the net force

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

Tags

NGSS.MS-PS2-2

The tendency of an object to stay in motion or at rest is called 

• velocity
• acceleration
• speed
• inertia

What is the difference between mass and weight?

• mass is how much matter is in an object, and weight is the gravitational pull on that object
• mass and weight are the same
• weight affects how much mass is in an object
• weight is determined by how many atoms make up an object

Tags

NGSS.MS-PS2-4

Which statement best explains Newton's Third Law of Motion?

• An object at rest tends to stay at rest.
• For every action there is an equal and opposite reaction.
• The acceleration of an object is based on the force applied.
• An object continues its motion until an unbalanced force is applied.

Tags

NGSS.MS-PS2-1

Which is the best example of Newton's First Law of Motion?

• a basketball thrown in the air falls to the ground
• a soccer ball remains motionless until it is kicked by a player
• a baseball player swings at an approaching ball
• an ice skater pushes back from a wall and moves backwards

An object is resting motionless on a surface. According to Newton's 1st Law, the object will only start to move if

• the net forces on the object equal zero
• an unbalanced force is applied to the object
• the upward force of the object is equal to its acceleration
• two forces that are equal and opposite are applied to the object

Tags

NGSS.MS-PS2-2

A truck that is travelling at a constant speed is carrying some boxes.  If the truck comes to a sudden stop, what will most likely happen to the boxes?

• They will stay in the middle of the truck.
• They will slide toward the front of the truck.
• They will slide toward the back of the truck.
• They will fall off the side of the truck.

Tags

NGSS.MS-PS2-2

The force that draws all objects towards Earth.

• friction
• gravity
• mass
• acceleration

Tags

NGSS.MS-PS2-4