APB Physics
Quarter 1 Exam Review Sheet
Directions: Answer each question and check them with the answer key on the last page.
1) On a highway, a car is driven 80. kilometers from New York City to Montauk in 2.00 hours.
The car then turns around and travels 80 kilometers back to New York City in 3.00 hours. What
was the average speed of the car during the entire trip?
A) 40 km/h
B) 32 km/h
C) 0 km/h
D)80 km/h
2) What was the average velocity of the car during the entire trip?
A) 40 km/h
B) 32 km/h
C) 0 km/h
D)80 km/h
3) The diagram below represents the path of a stunt car that is driven off a cliff, neglecting
friction.
Compared to the horizontal component of the car’s velocity at point A, the horizontal
component of the car’s velocity at point B is
A) smaller
B) greater
C) the same
4) Which vector represents the direction of the acceleration at point B from question #3?
A) 
B) 
C)
D)
E)
5) A vector has a magnitude of 12. When its tail is at the origin it lies between the positive x axis
and negative y axis and makes an angle of 30 with the x axis (quadrant 4). Its y component is
(sketch a picture):
A) 6 3
B) 6 3
C) 6 D) –6 E) 12
6) A car increases its speed from 9.6 meters per second to 11.2 meters per second in 4.0 seconds.
The average acceleration of the car during this 4.0-second interval is
A) 0.40 m/s2
B) 2.4 m/s2
C) 2.8 m/s2
D) 5.2 m/s2
7) A boy on the edge of a vertical cliff 20 m high throws a stone horizontally outwards with a
speed of 20 m/s. It strikes the ground at what horizontal distance from the foot of the cliff? Use g
= 10 m/s2
A) 10 m
B) 40 m
C) 50 m
D) 50 5 m E) none of these
8) As a car is driven south in a straight line with decreasing speed, the acceleration of the car
must be
A) directed northward
B) directed southward
C) zero
D) directed east
9) A 30-N crate rests on a rough horizontal floor. A 10-N horizontal force is then applied to it. If
the coefficients of friction are s = 0.5 and k = 0.4, the magnitude of the frictional force on the
crate is:
A) 5 N
B) 10 N
C) 15 N
D) 30 N
E) 40 N
10) A forward horizontal force of 12 N is used to pull a 240-N crate at constant velocity across a
horizontal floor. The coefficient of friction is:
A) 0.5
B) 0.05
C) 2
D) 0.2
E) 20
Answers:
1) B
2) C
3) C
4) A
5) D
6) A
7) B
8) A
9) B
10) B