JAGT - Force Work Energy

All forces have______

• joules

• size and direction

• height

• weight

True or false:  At the peak of the lift hill, a rollercoaster car has more potential energy than any other form of energy.

• True

• False

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.

• eventually come to a stop.

• change its momentum.

• accelerate.

The gravitational force of any object near Earth's surface is ____.

• unknown

• friction

• Newton's first law

• 9.8 m/s²

When the net force is zero, the forces on an object are balanced. True or false.

• true

• false

What must occur to a shopping cart at rest in order to make it roll forward?

• A force must be provided to overcome gravity.

• Balanced forces must be acting on the cart.

• An unbalanced force applied to the cart pushing or pulling it forward.

• The unbalanced force acting upon it must be smaller than that of friction.

A rocket is sent into space.  When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

What type of energy is caused by an object’s vibration?

• Electrical

• Sound 

• Thermal

• Light

How much work is done by a motor that lifts a train car on El Toro to the top of a 70-meter hill using a force of 15,000 N?

• 1,000,000 J

• 214.29 J

• 1,050,000 J

• 105,000 J

Ability to do work is known as?

• Energy

• Work

• Force

• Machine