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Force And Motion
Test Description: Force and Motion
Instructions: Answer all questions to get your test result.
1) A student wants to describe the velocity of a moving car. What information does the student need?
A
direction and relative motion
B
speed and direction
C
direction and position
D
speed and position
2) A car travels 160 km in 2 hours. What is the average speed of the car?
A
160 km/hr
B
0.01 km/hr
C
80 km/hr
D
320 km/hr
3) How is velocity different from speed?
A
Velocity is always bigger.
B
Velocity includes force.
C
Velocity is part of calculating speed.
D
Velocity includes direction.
4) Melinda crumples a sheet of paper into a small ball. She drops the crumpled ball of paper at the same time as she drops a flat sheet of paper. Why does the crumpled ball land before the sheet of paper?
A
The force of gravity on the ball is greater than on the sheet of paper.
B
Air resistance slows the flat sheet of paper.
C
Gravity acts on round objects only.
D
Air resistance slows the flat sheet of paper.
5) Jackson designed an experiment to test the effect of gravity on objects. He dropped a baseball and a marble at the same time from a height of two meters. What would the result have been if Jackson had decided to compare a baseball and a feather.
A
The result would not be valid because the objects are too different.
B
The feather would have landed first.
C
There would have been no difference in the result.
D
The baseball would have landed first.
6) Mrs. Sabel is pushing a wheelbarrow in her garden. If she continues to push with the same force, which of the following will cause the wheelbarrow to accelerate more slowly?
A
Moving the wheelbarrow onto a paved sidewalk
B
Greasing the wheel of the wheelbarrow
C
Holding the handles of the wheelbarrow with gloves
D
Adding a pile of dirt to the wheelbarrow
7) What is needed to give a large boulder a large acceleration?
A
A large force
B
A small inertia
C
A large inertia
D
A small force
8) Which of the following is not an example of accelerated motion?
A
An elevator speeding up
B
A car driving at constant speed
C
An elevator slowing down
D
A car driving around a curve at constant speed
9) Which of the following is an example of increasing friction intentionally?
A
adding grease to gears on a bike
B
throwing sand on an icy driveway
C
waxing skis
D
oiling a squeaky door
10) When an object’s position relative to another object is changing,
A
it has a high velocity.
B
it is accelerating.
C
it is speeding.
D
it is in motion.
*select an answer for all questions
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