Energy Review Exam (physics First) Question Preview (ID: 47313)


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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 15 mi/hr
c) when the car's velocity is 0 mi/hr
d) The amount of KE stays the same

Who has more PE?
a) A book on the floor
b) A book on the table
c) A book on top of the refrigerator
d)

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) pine cone 2
c) they both have the same amount of KE
d)

Where does roller coaster have the greatest amount of PE
a) At the top of the hill
b) At the bottom of the hill
c) The total amount of PE stays the same
d)

Where does roller coaster have the greatest amount of KE
a) at the top of the hill
b) at the bottom of the hill
c) the total amount of KE stays the same
d)

an object falls towards the Earth's surface. The loss of its PE is equal to its
a) gain in mass
b) gain in KE
c) loss of mass
d) PE stays the same

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 increased
b) the total amount of energy decreased
c) the total amount of energy stayed the same
d)

if the velocity of a rolling ball increases which of the following statement is true? The rolling ball's....
a) inertia increases
b) inertia decreases
c) momentum increases
d) momentum decreases

which of the following has the least amount of momentum?
a) a 100 kg ball moving slowly
b) a 100 kg ball moving fast
c) a 10 kg ball moving slowly
d) a 10 kg ball moving fast

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) 250 kg*m/s
b) 50 kg*m/s
c) 0 kg*m/s
d)

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