ch 11 and 15 facts

The special Theory of Relativity describes how time is affected by ___________

• motion

• space

• worms

The first postulate of Einstein's theory is that all the laws of nature are _____________ in all uniformly moving frames of reference.

• are the same

• are different from one another

• weigh 2,400,000 lbs

• move all

Time dilation is:

• the stretching of time

• the shrink of tie

• happy TV

• the watering down of time

Torque is produced by a ___________________ and tends to produce rotational acceleration.

• turning force

• tuning fork

• forward force

• reverse force

What is the center of mass?

• is the point located at the objects average position of mass.

• is the line located at the objects average position of mass

• the middle of a catholic church

• is the point located at the space average of position of mass

For everyday objects, the center of gravity is

• the same as center of mass

• the negative of center of mass

• the CM of center of mass

• double the center of mass

If the center of gravity of an object is above the area of support, the object will...

• remain upright

• tip over

• explode

• have increased inertia that makes it turn sideways.

When you stand erect with your arms at your sides, your CG (center of gravity) is

• within your body

• outside your body

• in space

• under a turtle

When an object is _______________, the center of gravity of that object is raised, lowered or unchanged.

• toppled

• tippled

• tripled

• ridiculous

Torque is the force that makes your car able to accelerate. It is a ____________ force.

• rotational

• gravitational

• invitational

• popsicle