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Energy Review Exam (physics First)
Test Description: Exam review
Instructions: Answer all questions to get your test result.
1) When does a car have the least KE
A
when the car's velocity is 30 mi/hr
B
when the car's velocity is 0 mi/hr
C
when the car's velocity is 15 mi/hr
D
The amount of KE stays the same
2) Who has more PE?
A
A book on the table
B
A book on the floor
C
A book on top of the refrigerator
3) 2 pine cones are fall at the same velocity. Pine cone 1 has less mass than Pine cone 2. which pine cone has MORE KE
A
pine cone 1
B
they both have the same amount of KE
C
pine cone 2
4) Where does roller coaster have the greatest amount of PE
A
The total amount of PE stays the same
B
At the top of the hill
C
At the bottom of the hill
5) Where does roller coaster have the greatest amount of KE
A
at the bottom of the hill
B
at the top of the hill
C
the total amount of KE stays the same
6) an object falls towards the Earth's surface. The loss of its PE is equal to its
A
PE stays the same
B
loss of mass
C
gain in KE
D
gain in mass
7) You put a warm soda into a cooler. Later you get the soda and it is colder. What happened to the total amount of energy in the cooler?
A
the total amount of energy decreased
B
the total amount of energy stayed the same
C
the total amount of energy increased
8) if the velocity of a rolling ball increases which of the following statement is true? The rolling ball's....
A
momentum increases
B
inertia decreases
C
momentum decreases
D
inertia increases
9) which of the following has the least amount of momentum?
A
a 10 kg ball moving slowly
B
a 10 kg ball moving fast
C
a 100 kg ball moving slowly
D
a 100 kg ball moving fast
10) 2 cars have a head on collision. What is the change in total momentum of the 2 cars before and after the crash? Car 1 is 1000 kg and car 2 is 1500. Both are traveling at 10 m/s
A
0 kg*m/s
B
250 kg*m/s
C
50 kg*m/s
*select an answer for all questions
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