PHYSICS 165 MODULE 2 EXAM QUESTIONS AND
ANSWERS
/. True or False: Kinematics is the branch of physics which is concerned with the motion
of objects without regard to the forces that affect the motion. - Answer-✅True
/.Match the physical quantity in the left column with the appropriate question in the right
column. Each choice will be used exactly once.
Position
Displacement
Time Interval
Speed - Answer-✅Where is it?
How far did it go?
How long did it take?
How fast did it go?
/.Your place of work is 2.0 miles directly west of the post office. Your house is 1.5 miles
directly north of the post office. You live in a city where the streets all run either north-
south or east-west. On your way home from work you stop at the post office to drop of
some mail. Your trip begins at 4:50 pm and ends at 5:05 pm. Determine the following
physical quantities:
a. The time interval of your trip _____
b. Your distance traveled _____
c. The magnitude of the displacement for this trip _____
d. The average speed of your trip _____
e. The magnitude of the average velocity of your trip _____ - Answer-✅a) 5:05pm -
4:50pm = 15 minutes
b) 2.0 miles + 1.5 miles = 3.5 miles
c) a^2+b^2=c^2
2^2+1.5^2 = c^2 c= 2.5 miles
d) v=d/t answer in mph
e v=d/t answer in mph
/.Which statement BEST describes vectors and scalars? - Answer-✅Vectors have both
magnitude and direction
Scalars have only magnitude
/.A security guard walks around the perimeter of a building during one of his rounds.
The distance he travels around the building is 528 m and it takes him 367 s to complete
one lap around the building. Determine the following physical quantities:
, a. His average speed _____
b. His average velocity _____ - Answer-✅a) v=d/t answer in m/s
b) v=d/t answer is zero since he starts and stops in the same place
/.For a truck travelling at a uniform speed, the ______________. - Answer-✅a)
acceleration must be the same for each second
b) acceleration must be the same for each second
c) directions during the first, second, and third seconds must be equal
d) displacement traveled during the first, second, and third seconds must be equal
Answer C
/.An airplane can fly with an airspeed of 227 mph. Determine the ground speed of the
airplane in the following situations:
a. When the plane encounters a headwind of 25.0 mph. (a headwind is one blowing
straight at the airplane)
b. When the plane encounters a tailwind of 25.0 mph. (a tailwind is one blowing in the
same direction as the airplane's airspeed)
c. When the plane encounters a crosswind of 25.0 mph. (a crosswind is one blowing in
a perpendicular direction to the plane's airspeed) - Answer-✅a) Plane with headwind of
25 mph goes 25 mph slower
b) Plane with tailwind of 25 mph goes 25 mph faster
d) Plane encountering a crosswind 25 mph has a ground speed of 25^2+227^2=c^2
c^2=Square root of 52154
c=228mph
/.If you are driving your car at 32.5 mph, and a police car is behind you traveling in the
same direction at 43.5 mph, how fast is the police car traveling compared to your car? -
Answer-✅43.5 - 32.5 = 11mph
/.Which of the following statements is NOT true about acceleration? - Answer-✅a)
Acceleration is the change in velocity divided by time interval
b) Acceleration is a scalar quantity
c) Acceleration is the rate of change in velocity
d) When velocity is constant, then the acceleration is zero
Answer: B
/.A runner moving at 3.76 m/s speeds up to 7.85 m/s in 3.37 s. What is the runner's
acceleration? - Answer-✅a=vf-vi/t answer in m/s^2
/.A car moving at 28.0 m/s slows to a stop for a stop sign in 13.5 s. What is the
acceleration of the car? - Answer-✅a=vf-vi/t answer in m/s^2
ANSWERS
/. True or False: Kinematics is the branch of physics which is concerned with the motion
of objects without regard to the forces that affect the motion. - Answer-✅True
/.Match the physical quantity in the left column with the appropriate question in the right
column. Each choice will be used exactly once.
Position
Displacement
Time Interval
Speed - Answer-✅Where is it?
How far did it go?
How long did it take?
How fast did it go?
/.Your place of work is 2.0 miles directly west of the post office. Your house is 1.5 miles
directly north of the post office. You live in a city where the streets all run either north-
south or east-west. On your way home from work you stop at the post office to drop of
some mail. Your trip begins at 4:50 pm and ends at 5:05 pm. Determine the following
physical quantities:
a. The time interval of your trip _____
b. Your distance traveled _____
c. The magnitude of the displacement for this trip _____
d. The average speed of your trip _____
e. The magnitude of the average velocity of your trip _____ - Answer-✅a) 5:05pm -
4:50pm = 15 minutes
b) 2.0 miles + 1.5 miles = 3.5 miles
c) a^2+b^2=c^2
2^2+1.5^2 = c^2 c= 2.5 miles
d) v=d/t answer in mph
e v=d/t answer in mph
/.Which statement BEST describes vectors and scalars? - Answer-✅Vectors have both
magnitude and direction
Scalars have only magnitude
/.A security guard walks around the perimeter of a building during one of his rounds.
The distance he travels around the building is 528 m and it takes him 367 s to complete
one lap around the building. Determine the following physical quantities:
, a. His average speed _____
b. His average velocity _____ - Answer-✅a) v=d/t answer in m/s
b) v=d/t answer is zero since he starts and stops in the same place
/.For a truck travelling at a uniform speed, the ______________. - Answer-✅a)
acceleration must be the same for each second
b) acceleration must be the same for each second
c) directions during the first, second, and third seconds must be equal
d) displacement traveled during the first, second, and third seconds must be equal
Answer C
/.An airplane can fly with an airspeed of 227 mph. Determine the ground speed of the
airplane in the following situations:
a. When the plane encounters a headwind of 25.0 mph. (a headwind is one blowing
straight at the airplane)
b. When the plane encounters a tailwind of 25.0 mph. (a tailwind is one blowing in the
same direction as the airplane's airspeed)
c. When the plane encounters a crosswind of 25.0 mph. (a crosswind is one blowing in
a perpendicular direction to the plane's airspeed) - Answer-✅a) Plane with headwind of
25 mph goes 25 mph slower
b) Plane with tailwind of 25 mph goes 25 mph faster
d) Plane encountering a crosswind 25 mph has a ground speed of 25^2+227^2=c^2
c^2=Square root of 52154
c=228mph
/.If you are driving your car at 32.5 mph, and a police car is behind you traveling in the
same direction at 43.5 mph, how fast is the police car traveling compared to your car? -
Answer-✅43.5 - 32.5 = 11mph
/.Which of the following statements is NOT true about acceleration? - Answer-✅a)
Acceleration is the change in velocity divided by time interval
b) Acceleration is a scalar quantity
c) Acceleration is the rate of change in velocity
d) When velocity is constant, then the acceleration is zero
Answer: B
/.A runner moving at 3.76 m/s speeds up to 7.85 m/s in 3.37 s. What is the runner's
acceleration? - Answer-✅a=vf-vi/t answer in m/s^2
/.A car moving at 28.0 m/s slows to a stop for a stop sign in 13.5 s. What is the
acceleration of the car? - Answer-✅a=vf-vi/t answer in m/s^2
