WorksheetsPhysics Final Exam Review 2021
Total questions: 97
Worksheet time: 4hrs 32mins
An object that has momentum can be described as _________
a) changing its velocity
b) moving fast
c) resisting changes in its state of motion
d) having its mass in motion
e) encountering a net force
Which one of these objects has the greater amount of momentum?
A turtle that slowly crosses a road
A parked car
A stop sign
During a collision. an object experiences an impulse. How can this impulse be calculated?
Multiplying force by time
Multiplying mass by velocity
Dividing velocity by time
Multiplying mass by acceleration
When a cannon fires a cannon ball, it recoils backwards. This occurs because of...
Energy in the system is conserved
Energy in the system is increased
Momentum in the system is conserved
Energy in the system is not conserved
A freight car of mass 20,000kg moves along a track at 15 m/s. What is the momentum of the car?
30,000 kg*m/s
3,000 kg*m/s
300,000 kg*m/s
3,000,000 kg*m/s
A 2kg object moving at 5 m/s encounters a 30 N resistive force over a duration of 0.10 seconds. The impulse experienced by this object is _____
0.30 N*s
2 N*s
2.5 N*s
3 N*s
7 N*s
A football player is running north down the field, and has a momentum of 120 kg*m/s. He experience a southward impulse of 200 N*s. What is the final momentum of the player
80 kg*m/s north
80 kg*m/s south
320 kg*m/s north
320 kg*m/s south
A 5kg ball has a momentum of 30 kg*m/s. What is the speed of the ball
150 m/s
35 m/s
6 m/s
5 m/s
Before objects A and B collide, A has a momentum of 26 kg*m/s and B has a momentum of -14 kg*m/s. After the collision, A has a momentum of 8 kg*m/s. B has a momentum of..
2 kg*m/s
4 kg*m/s
6 kg*m/s
12 kg*m/s
32 kg*m/s
In an inelastic collision...
objects bounce off each other
objects stick together
objects stick together for a while then separate
one object flips over the other
direction
A sled is at rest on a slope, held by a rope attached to a pole, as shown. Which forces should be shown on a Free Body Diagram for the sled?
gravity and the tension in the rope
gravity, the tension in the rope, and the normal force
gravity only
gravity, the tension in the rope, the normal force, and the net force
A skier slides down a frictionless hill with an acceleration of 2.04 m/s2. What angle does the hill make with the horizontal?
78.0°
30.0°
12.0°
6.0°
A child wearing a slippery snowsuit is sitting on a sled such that the coefficient of static friction between the suit and the sled is 0.112. What is the maximum acceleration possible for the sled before the child slips off?
9.80 m/s2
8.70 m/s2
1.10 m/s2
0 m/s2
A road is banked such that cars can go around the curve even if it is icy and friction is essentially zero. What forces belong on a Free Body Diagram for a car under these conditions?
gravity, normal
gravity only
normal only
gravity, normal, centripetal
The diagram above shows the forces acting on a box. If the box is 4 kg, what is its acceleration?
4 m/s2, left
4 m/s2, right
3 m/s2, left
3 m/s2, right
A net force of 9.0 N accelerates a wagon at 3.0 m/s2. What net force would be required to accelerate the same wagon at 9.0 m/s2.
27 N
81 N
15 N
3 N
You push a 80-kg sofa to move it to a different location in the room. It takes a force of 140 N to start the sofa moving. What is the coefficient of static friction between the sofa and the carpet?
0.175
1.75
0.75
0.275
The resultant between 2 vectors can be found by placing the vectors
tail to tail.
tip to tip.
tip to midpoint.
tip to tail.
When adding two vectors that are perpendicular, it is best to use the____________.
Pythagorean theorem
law of cosines
law of sines
free-body diagram
A box with a mass of 10kg is at rest on a table. The normal force acting on the box is_____.
989 N downward
9.8N upward
10kg upward
98N upward
A sofa is at rest on the floor. The mass of the sofa is 50 kg and the coefficient of static friction between the sofa and the floor is 0.01. The maximum force of static friction is approximately
4.9N
49N
500N
5000N
The equilibrant of a force directed 45owest of north has the direction
45o west of north
45o south of east
45o east of north
45o west of south
A ship at sea is due into a port 400.0km due south in two days. However, a severe storm comes in and blows it 300.0km due east from its original position. How far is the ship from its destination? In what direction must it travel to reach its destination? (1dp)
500 Km 53.1o SW
500 Km 36.9o SW
700 Km 45o NE
700 Km 45o SW
0.000008
0.0025 x 1.41 = 0.003525
The variable that responds to the changes in the other variable is the ___ variable.
Independent
Dependent
Constant
Control
The variable that the experimenter (or you) control is the ___ variable.
Independent
Dependent
Constant
Control
What type of graph is best used to represent trends in data?
Line
Circle
Bar
Pictograph
Complete the statement:
5.0 cm/min = ______ m/day
(100 cm = 1 m)
72
840
7.2
5,040,000
