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Physical Science - Chapter 5 Part 2
Test Description: Force, Motion, Gravity, and Friction
Instructions: Answer all questions to get your test result.
1) The gravitational pull is greater between two objects that
A
are moving at greater speed
B
are farther apart
C
have greater masses
D
have rougher surfaces
2) What is the net force on an object when you combine a force of 10 N north with a force of 5 N south?
A
50 N north
B
5 N north
C
5 N south
D
15 N north
3) Mass is
A
a measure of gravitational force
B
a measure of the amount of matter or stuff
C
measured in newtons
D
different on the moon than on Earth
4) Dividing the total distance traveled by the total time in a certain direction is how to calculate
A
average motion
B
average acceleration
C
average speed
D
average velocity
5) The difference between speed and velocity is that
A
speed involves time, while velocity does not.
B
velocity has direction, while speed does not
C
velocity involves time, while speed does not
D
speed has direction, while velocity does not
6) To produce change in motion, a force must be a(n)
A
gravitational force
B
frictional force
C
unbalanced force
D
balanced force
7) A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?
A
His direction was unchanged
B
His speed increased
C
His direction changed
D
His speed decreased.
8) In which of the following is a skater NOT accelerating
A
going straight at constant speed
B
going straight while slowing down
C
making circles at constant speed
D
going straight while speeding up
9) A student has a weight of 420 N on Earth. What is the student’s weight on the moon.
A
2520 N
B
70 N
C
2520 kg
D
70 kg
10) Give 3 examples of friction being helpful in everyday life
A
being able to walk forwards, brakes on a car, rubbing hands together for warmth
B
being able to walk forwards, rubbing hands together for warmth, engine components wearing out
C
being able to walk forwards, brakes on a car, holes in socks
D
brakes on a car, rubbing hands together for warmth, rug burns
*select an answer for all questions
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