Liberty School
10th Grade Physics Midterm Study Guide
Name: _________________________________________________
Date: _____________________
Ms. Stephanie Custodio
INSTRUCTIONS: Read carefully each problem and solve them tidily. Use the proper
formulas and a scientific calculator to solve them. Write and circle your answers in ink.
REMEMBER TO STUDY THE THEORY FROM THE BOOK AND NOTEBOOK TOO.
Conversions and Significant Figures
1. Express each of the following as indicated:
a. 2 dm expressed in millimeters
b. 2h 10 min expressed in seconds
c. 16 g expressed in micrograms
d. 0.75 km expressed in centimeters.
e. 0.675 mg expressed in grams
f. 462 µm expressed in centimeters.
g. 35 km/h expressed in meters per second
2. A hydrogen atom has a diameter of about 10 nm.
a. Express this diameter in meters.
b. Express this diameter in millimeters.
c. Express this diameter in micrometers.
3. The average mass of an automobile in the US is about 1.440 x 10 6 g. Express this
mass in kilograms.
4. If a woman has a mass of 60,000,000 mg, what is her mass in grams and kilograms?
5. How many significant figures are in the following measurements?
a. 300,000,000 m/s
b. 3.00 x 108 m/s
c. 25.030°C
d. 0.006070°C
Distance, Displacement, Speed, and Velocity
1. Heather and Matthew walk with an average velocity of 0.98 m/s eastward. If it
takes them 34 min to walk to the store, what is their displacement?
2. What is the displacement of your car if it begins at your school, covers 10 miles to
your house and finish back at school?
3. An automobile travels on a straight road for 80 km at 50 km/h. It then continues in
the same direction for another 40km at 30km/h. What is the average velocity of
the car during this 120 km trip?
4. It takes you 9.5 min to walk with an average velocity of 1.2 m/s to the north from
the bus stop to the museum entrance. What is your displacement?
5. A doctor travels to the east from city A to city B (75km) in 1.0h. What is the
doctor’s average velocity?
6. The Olympic record for the marathon is 2.00h, 9.00min, 21.0s. if the average speed
of a runner achieving this record is 5.436 m/s, what is the marathon distance?
7. Two cars are traveling on a desert road, as shown below. After 5.0 s, they are side
by side at the next telephone pole. The distance between the poles is 70m. identify
the following quantities:
a. The displacement of car A after 5.0s
b. The displacement of car B after 5.0s
c. The average velocity of car A during 5.0s
d. The average velocity of car B during 5.0s
CAR A
ti= 63 100
CAR A
tf= 63 105
CAR B
CAR B