1. What is the net force exerted on a... driver while the race car is accelerating from 0 to

1.
What is the net force exerted on a 90.0 kg race-car
driver while the race car is accelerating from 0 to
44.7 m/s in 4.50 s?
2.
A 0.50 kg ball with a speed of 4.0 m/s strikes a
stationary 1.0 kg target. If momentum is conserved,
what is the total momentum of the ball and target
after the collision?
Use this diagram for questions 6-11
3.
4.
Starting from rest at the center of a skating rink, two
skaters push off from each other over a time period of
1.2 s. What is the force of the push by the smaller
skater?
A ball moving at 30 m/s has a momentum of 15
kg·m/s. The mass of the ball is
6.
Where does the ball have no speed?
7.
Where does the ball have the least kinetic energy?
8.
Where does the ball have the least potential energy?
9.
Where does the ball have the most kinetic energy?
10. Where does the ball have the most potential energy?
11. Where is the ball moving the fastest?
12. What is the velocity of an object if it has a mass of 20
kg and a kinetic energy of 3,000 J
5.
The 500 g cart is moving in a straight line at a
constant speed of 2 m/s. Which of the following must
the 250 g toy car have in order to maintain the same
momentum as the cart?
6.
What is the mass of an object that has 200 J of kinetic
energy when moving 2 m/s?
Skylar climbed a ladder so that he had a potential
energy of 2942 J. If his mass is 91.82 kg, about how
high up is he on the ladder?
7.
8.
A cheetah can run briefly with a speed of 31 m/s.
Suppose a cheetah with a mass of 27 kg runs at this
speed. What is the cheetah’s kinetic energy?
9.
Hot coffee is stirred with a spoon, the spoon gets hot
due to
What is the gravitational potential energy of a 500 g
box 2 m above the ground?
The SI unit for energy is
29. What is the resistance in a wire that carries 5
amps when the voltage is 20 volts?
The SI unit of power is
The property of an object or a system which enables
it to do work is
10.
11.
12.
13.
14.
13. The diagram shows two wave pulses travelling along
a rope. When the wave pulses meet they will
14. The velocity of sound is 340 m/s. What is the
wavelength of a sound wave with a frequency 200 Hz
is
15. One should always wear sunscreen when out in the
hot Texas sun. Sunburns are caused by
16. It is possible to break a wine glass by singing very
loudly at the right note.
This phenomenon is called
17. The SI unit for resistance is
18. Sound is a ___________ type of wave:
Use this diagram for questions 25-28
25. The wavelength is indicated by which letter?
26. The wave crest is represented by which letter?
27. The wave trough is represented by which letter?
28. Which letter represents amplitude?
31. In a swimming pool, the water near the surface is
slightly warmer. The warm water rises because of
32. How much current flows through a wire with a
resistance of 200 Ω if the voltage is 120 V?
33. In which circuit will the brightness of bulbs be
diminished as more bulbs are added?
35. A student lifts a box of books that weighs 200 N.
The box is lifted 0.65 m. How much work does the
student do on the box?
40. If the metal rod is held in the fire long enough, heat
will travel down the rod and burn the hand. This type
of heat transfer is
41. A house burns down. On the house across the street,
all of the vinyl siding is twisted and warped by the
heat. The heat was transferred across the street by
42. The above diagram represents
Use this diagram for questions 36-37
36. The above circuit is a(n) ___ circuit.
37. If resistor one has a resistance of 12 Ω, resistor two
has a resistance of 20 Ω, and resistor three has a
resistance of 10 Ω, what is the total resistance?
38. In which circuit will the brightness of bulbs be
diminished as more bulbs are added?
39. How much current does a 100-W light bulb use when
connected to a voltage of 120 V?
47. In order for work to be done
48. A rock climber wears an 8.5 kg knapsack while
scaling a cliff. After 25 minutes, the climber is 8.2 m
above the starting point. If the climber has a weight
of 650 N, how much work does she do lifting herself
and the knapsack?
44. A principle stating that the total linear momentum of
an isolated system remains constant regardless of
changes within the system is known as
45. A forklift raises a box 3 m doing 15,000 J of work on
it. What is the mass of the box?
46. A box that weighs 575 N is lifted a distance of 25 m
straight up by a cable attached to a motor. The job is
done in 12 s. What power is developed by the
motor?
43. The straw in the glass of water above appears to be
cut in half due to light rays being
51. A charge of -0.0002 C and a charge of 0.0008 C are
separated by 0.25 m. What is the force between the
two charges?
52. You observe two balloons being pushed away from
each other as shown above. The repulsion of these
balloons from one another provides evidence that
______.
53. Charges may be transferred from one object to
another but cannot be created or destroyed. This is
54. Given the mass of an object, one should use the
following equation to calculate the weight: