Forces - Mission to Mars Revision

what are forces?

• Pull or push

• Most forces are contact

• Most forces are non contact

• Magnetism and Gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

This diagram can be used to indicate which of the following? (TWO correct answers)

• An object at rest

• An object accelerating

• An object decelerating

• an object moving at a constant velocity (speed)

• (Trick question -- there is only one correct answer)

Unbalanced Forces

• there is a net force acting on a object

• Change in motion

• no changed in motion

• no net force acting on a object

Tags

NGSS.MS-PS2-2

Gravity and friction are two types of

• inertia

• masses

• speed

• forces

Tags

NGSS.MS-PS2-4

What is the Net Force and the direction of the object's movement as a result of the net force?

• 11N, Right

• 11N, Left

• 1N, Left

• 1N, Right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

Imagine you travel to another planets. What will change as you walk around the surface of the planet- your mass or your weight?

• Mass
• Weight 
• Both 
• Neither 

Friction definition

• a force that resists motion between two surfaces that are pressed together

• force of attraction between two objects, Earth’s gravity pulls on all objects

• 1.force: magnetic force, attraction or repulsion that arises between electrically charged particles

• Anytime you see something moving, you can be sure that a force created its motion.

Tags

NGSS.MS-PS2-2

If a feather and a hammer are dropped at the same time on the moon, where there is no atmosphere, which one will hit the ground first?

• Neither, there is no gravity on the moon.
• hammer because it has more mass
• feather because it has less mass
• both will hit at the same time

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The repelling or attracting force between a magnet and a iron.

• Magnetic Force

• Electrical Force

• Gravity

Tags

NGSS.MS-PS2-3