Forces and Motion Concepts Review

The upward force that a flat surface exerts on an object sitting on it is called the ______ ________.

(a)  

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

The resistive force that occurs when the surfaces of 2 objects rub against each other they slide past each other is called (a)   .

In the diagram below, a girl sits on a sled and slides down a hill of snow. The arrow that represents the force of friction opposing the motion of the sled down the hill is (a)   .

• Arrow A

• Arrow B

• Arrow C

• Arrow D

Tags

NGSS.MS-PS2-2

According to Newton's 1st law, in order for an object's state of motion to change there must be a(n) __________ _______

(a)  

Tags

NGSS.MS-PS2-2

According to Newton's 1st law, in order for constant velocity to occur the forces on the object must be (a)   .

Organize these options into the right categories

Groups:

(a) unbalanced force

,

(b) balanced forces

• changing direction

• constant velocity

• stationary

• not moving

• slowing down

• speeding up

• acceleration

A car speeds up to get on the highway.

You know there have to be (a)   acting on the car because its speed is​ (b)   .

• unbalanced forces
• balanced forces
• not changing
• changing

Tags

NGSS.MS-PS2-2

A pulling force that a cable exerts on an elevator as it moves upward is called (a)   .

All objects (such as Earth) with mass exert a field force on other object with mass. This force can only act as a pulling force. This force is known as (a)   .

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The (a)   force is a field force that can be either a push or a pull.

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3