8th Review Unit 2 Question Preview (ID: 48471)


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Mrs. Moreno walks from her room to the cafeteria at a constant speed for 20 minutes. Then she stops in the teachers lounge and talks to Mrs. Flores. She then walks back to her room. What would graph look like?
a) lines would start and go up and stay up
b) lines would start and go down and stay down
c) lines would go up, stop, then go back down
d) lines would stay straight all the way across

The weather has been humid lately and Mrs. Flores has to use the flat iron to straighten her frizzy hair. What happens when she plugs in the hot iron with the button on the ON position?
a) Thermal energy to electrical energy occurs
b) Electrical energy to thermal energy occurs
c) Thermal energy to mechanical energy occurs
d) Mechanical energy to thermal energy occurs

If Coach Chessher rolls a football down the bleachers 5.00cm in 2.42 seconds, what is the average speed of the football? Remember S=d/t And round up if you have to!
a) 3.06 m/s
b) 2.07 m/s
c) 1.55 m/s
d) 1.33 m/s

Mr. Martinez's TRUCK and Ms. Flores' CAR of different masses, were driving down Pearsall Rd at 104 kilometers per hour. When coming to the stop sign on Shepherd Rd they each applied their brakes with same force. What best describes what happened?
a) Truck with more mass took longer to stop
b) Car with smaller mass took longer to stop
c) Car with smaller mass had inertia
d) Truck took less force to stop

If Ms. Kroll was at Six Flags with her kids and was brave enough to ride the Rattler roller coaster, where would they have they greatest potential energy?
a) at the very bottom
b) at the very top
c) coming down
d) going up

If Mr. Martinez was buying Cherry Slushies from Sonic for all of 8th grade, why would he be extra careful when making turns or coming to a stoplight?
a) Law of action-reaction
b) Law of force and acceleration
c) Law of inertia
d) Law of conservation of mass

Based on the law of action/reaction, if you are on a surf board and fell off, which direction would the surf board go?
a) behind you
b) to the left
c) to the right
d) in front of you

Using a table and a graph-which direction would my lines go when describing CONSTANT speed?
a) ----- Straight on graph
b) / Up on graph
c) \Down on graph
d) ^Up and Down on graph

A tube weighing 62kg is being pulled by a truck with a force of 124N, what is the acceleration of the tube? Remember F=m x a. Plug in your numbers where they go!
a) 0.5 m/s2
b) 5m/s2
c) 2 m/s2
d) 0.2 m/s2

On a graph Mrs. Flores races her new car 15m in 3 seconds? What is her average speed?
a) 30 m/s
b) 15 m/s
c) 5 m/s
d) 3 m/s

An object in motion stays in motion unless an unbalanced force acts upon it. What force eventually causes the object to stop moving?
a) Gravity
b) Weight
c) Mass
d) Friction

A 2000 kg race car and a 500 kg Go Cart are racing. SAME force is applied to each of them. What best describes the ACCELERATION of both of them?
a) Race car will accelerate twice as fast
b) Go Cart will accelerate four times as fast
c) Go Cart will accelerate twice as fast
d) Race car will accelerate 4 times as fast

How would a large boat be affected if it was moving North at 6.5m/s and the south current is 1.2m/s, and then suddenly the south current decreases??
a) Boat would move slower
b) Boat would move faster
c) Boat will stop
d) Direction of boat will change

Mr. Martinez pushes a box 16N to the left and Mrs. Flores pushes the same box in the opposite direction with 8N to the right, what is the result?
a) Box moves to the right with 8N of force
b) Box moves to the right with 24N of force
c) Box moves to the left with 2N of force
d) Box moves to the left with 8N of force

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