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SCIENCE SOL REVIEW |
Forces and Motion |
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Multiple Choice: Read each question and chose the best answer.
1. John goes over the top of a hill at a speed
of 4m/s while on his bicycle. Four seconds later, his speed is24m/s. What is
John's acceleration?
a. 24 m/s sq.
b. 20 m/s sq.
c. 16 m/s sq.
d. 6 m/s sq.
e. 5 m/s sq.
2. Forces that are equal in size and opposite
in direction are:
a. balanced forces
b. frictional forces
c. gravitational forces
d. net forces
e. weak forces
3. Newton's first law of motion states that an
object stays at rest unless a ____ acts on it.
a. balanced force
b. frictional force
c. gravitational force
d. net force
e. strong force
4. The rate of change of speed and/or the change in direction is called:
a. acceleration
b. average speed
c. gravity
d. inertia
e. velocity
5. The relationship among mass, force, and
acceleration is explained by:
a. conservation of
momentum
b. Newton's first law of motion
c. Newton's second law of motion
d. Newton's third law of motion
6. Which of the following objects has the
greatest inertia?
a. baseball
b. bowling ball
c. pencil
d. table-tennis ball
e. toothpick
7. As you climb a mountain, you get farther
from the center of the earth. Your weight will:
a. decrease
b. increase
c. remain the same
8. A person, in a head-on car collision, who
is not wearing a seat belt, continues to move forward at the original speed of
the car because of:
a. friction
b. inertia
c. gravity
d. weight
9. The statement "for every action there
is an equal and opposite reaction" is:
a. the law of
conservation of momentum
b. Newton's first law of motion
c. Newton's second law of motion
d. Newton's third law of motion
e. inertia
10. The acceleration due to gravity is:
a. 98 m/s sq.
b. 9.8 m/s sq.
c. 9.8 m/s
d. 0.98 m/s
11. A 300N force is used to move an object 2M.
The amount of work equals:
a. 150 Nm
b. 300 Nm
c. 302 Nm
d. 600 Nm
12. Two simple machines that are part of a
bicycle are:
a. A wheel an axle
and a screw
b. An inclined plane and a lever
c. An inclined plane and a wedge
d. A screw and an inclined plane
e. A wheel and axle and an inclined plane
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Answers
