2023-24 Physical Science Chapter 12C "Types of Forces"

Less massive objects exert more gravitational affect on other objects than more massive objects.

• True

• False

Tags

NGSS.MS-PS2-4

Scientists know exactly what causes gravity.

• True

• False

Tags

NGSS.HS-PS2-4

According to the textbook, Einstein's general theory of relativity is a better model of gravitational interactions than Newton's model of universal gravity.

• True

• False

Planets with more mass than planet Earth will accelerate objects _____________________.

• slower than on Earth

• faster than on Earth

• at the same rate on Earth due to universal gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

Select the Gravitational Constant for Free Fall near Earth.

• 9.81 m/s squared

• 9.81 m/s

• depends on weight of the object falling

• depends on the mass of the object falling

The direction of a friction force acting on an object is _______________________ to its direction of motion (or attempted motion).

• opposite

• the same

• neither opposite or the same

• depends on the type of friction

The magnitude of the friction force between solid objects is ___________________ to the force holding the two objects together.

• proportional

• disproportional

• the same

• depends on the type of friction

Friction affects fluids as well as solids.

• True

• False

A "sticky" force that holds things in place.

• Static Friction

• Sliding Friction

• Rolling Friction

• none of the answers for this question

The friction that exists when two objects are in motion relative to each other.

• Static Friction

• Sliding Friction

• Rolling Friction

• none of the answers for this question