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Physics (Chps. 6-8)
Test Description: Chapters 6-8 Part 2
Instructions: Answer all questions to get your test result.
1) When a baseball player follows through with their swing, which of the following is true?
A
impact time decreases, ball goes further
B
impact time increases, ball goes shorter
C
impact time increases, ball goes further
D
impact time decreases, ball goes shorter
2) How much force is needed to accelerate a 4.0 kg physics book to an acceleration of 2.0 m/s^2?
A
2.0 N
B
8.0 N
C
24.0 N
D
0.5 N
3) When 2 objects collide and they stick together, the collision is said to be
A
perfectly elastic
B
elastic
C
inelastic
D
both elastic and inelastic
4) As area increases pressure
A
increases
B
decreases
C
does not change
5) Which has more momentum, a large truck moving at 30m/s or a small truck moving at 30 m/s?
A
The small truck
B
The large truck
C
k
D
Both have the same momentum
6) A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass, its momentum would be
A
doubled
B
unchanged
C
cut in half
D
zero
7) A 4.0 kg ball has a momentum of 24.0 kgm/s. What is the ball's speed?
A
0.2 m/s
B
80 m/s
C
20 m/s
D
6.0 m/s
8) True or false: Impulses are usually smaller when an object is bouncing.
A
True
B
False
9) Momentum is defined as an object's
A
forces times time interval
B
mass times velocity
C
force times acceleration
D
mass times acceleration
10) Pressure is measured in
A
kilograms (kg)
B
newtons (N)
C
pascals (Pa)
D
kilograms times meter per second (kg m/s)
*select an answer for all questions
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