Final Review Quiz

Which formula correctly represents bromine dioxide? The prefix di means two.

• O2Br

• BrO2

• NiDi

• H2O

Tags

NGSS.MS-PS1-1

A stationary object (an object that is not moving) that allows us to see motion is called a _________. Examples: a building, a water tower.

• Frame of Reference

• tower

• projectile

• transfer of energy

Which of the following is a vector quantity? Remember, a vector quantity has a speed and direction.

• 50 m/s

• 50 m/s North

• 50 lbs

• 50 North

The speed and direction of an object is called it's________________________

• speed

• velocity

• acceleratin

• distance

The rate at which an object speeds up or slows down is

• velocity

• speed

• acceleration

• distance

What is the speed of a car that traveled 100 km in 5 hours?

Speed = distance/time

• 500 km/hr

• 20 km/hr

• 2.0 km/hr

• 105 km/hr

Calculate the acceleration of a train that increases its speed from 35 km/hr to 79 km/hr in 3hours.

Acceleration = (final velocity - starting velocity)/ time

• 8.7 km/hr

• 26.3 km/hr

• 38 km/hr

• 14. 14.7 km/hr

What is the Kinetic energy of a 80 Newton traveling at 65 km/hr ?

Kinetic Energy = 1/2 m x v (squared)

• 338,000 N

• 2,600 N

• 169,000 N

• .615 N

Tags

NGSS.MS-PS3-1

What is the kinetic energy of a 420-kilogram rollercoaster traveling at a velocity of 120 meters/second?

KE = 1/2mass x velocity(squared)

• 50,400 J

• 6,048,000 J

• 3.02400 J

• 3,024,00 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the amount of work done when a 72 Newton box is pushed 11 meters?

Work = force x distance

• 792 J

• 79.2 J

• 61 J

• 6.5 J