First Quarter Exam- Science 8

What defined as push or pull exerted by one body on another body?

• Force

• Motion

• Vector

• speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

•What is the unit of force

• m/s

• Newton

• m/s^2

• kilogram

This type of force is an attraction between two objects?

• Contact

• friction

• Gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What type of force defined as push or pull on another object by touching it?

• Contact force

• Gravity

• Friction

•A book rests on a table. The force of gravity pulls down on the boot with a force of 20 Newton's. What prevents the books from accelerating downward at 9.8 m/s^2

• The table presses back up on the book with an equal and opposite force of 20 Newton's

• The table presses back up on the book with a force greater than 20 Newton's

• The table and the book together are accelerating downward at 9.8 m/s^2

• The inertia of the book holds it up

Tags

NGSS.MS-PS2-1

The weight of a boulder on Neptune is 2,960 Newton's. The boulder has a mass of 269 kilograms . What is the acceleration due to gravity to mars.

• 3.2 m/s^2

• 8.9 m/s^2

• .2.04 x 10^6 m/s^2

• 11 m/s^2

Tags

NGSS.MS-PS2-2

•How much does a 6.0 kg bag of bolts weigh (w=m*g)( 9.8 m/s^2)

• 6.0 N

• 12.0 N

• 58.8 N

• a.600 N

Tags

NGSS.MS-PS2-4

•An _______ force must act on an object for it to change its motion.

• Balanced

• Unbalanced

• Gravitational

• electrical

Tags

NGSS.MS-PS2-2

•If the net force is equal to zero, the force acting on an object are

• Balanced

• Unbalanced

• Gravitational

Tags

NGSS.HS-PS2-1

Balanced forces does not change the objects speed or ________.

• Direction

• Distance

• Time

• mass