Energy

When two identical cars, one traveling twice as fast as the other, brake to a stop using old-fashioned brakes, the faster car will skid

• the same distance

• twice as far

• four times as far

• more than four times as far

Tags

NGSS.HS-PS2-1

After a car is raised in a service station, we say the car has increased

• Gravitational Potential Energy

• Kinetic Energy

• Chemical Energy

• Elastic Potential Energy

A model airplane moves three times as fast as another identical model airplane. Compared with the kinetic energy of the slower airplane, the kinetic energy of the faster airplane is

• the same for level flight

• twice as much

• more than four times as much

Raising an auto in a service station increases its gravitational potential energy. Raising it four times as high increases its potential energy by

• half

• same

• twice

• four times

Tags

NGSS.MS-PS3-2

A dog and a mouse run down the road with the same KE. The faster moving one is the

• can't say

• both run at the same speed.

• mouse

• dog

Tags

NGSS.HS-PS3-2

A circus performer diving off a tall pole has just as much kinetic energy as potential energy relative to the ground, when she

• reaches the bottom of her dive.

• is half way to the bottom.

• first begins her dive.

• is one-quarter the way to the bottom.

Whereas impulse involves force and time, work involves force and

• energy

• distance

• power

• acceleration

The formula for calculating kinetic energy is 1/2 mass times_________squared

• velocity

• weight

• inertia

• time

Raising a heavy load requires work. Raising it twice as high requires

• half as much work.

• the same work.

• twice the work.

• four times the work.

The formula for calculating Gravitational Potential Energy is Mass X _____ X height

• gravity

• gravy

• weight

• volume

Tags

NGSS.MS-PS3-2