# Force and motion science 8 quiz

___1. A single force that acts and causes a change in the state of motion of an object is
known as
a. balanced force
b. unbalanced force
c. resultant force
d. force
___2. It refers to a force exerted by a surface as an object “involves across it at makes an
effort to move across
a. normal
b. friction
c. tensional
d. applied
___3. Which has a greater gravity?
a. Mars
b. Earth
c. Jupiter
d. Venus
___4. In pushing a cabinet but didn’t move at all is
prevented by ______
a. force
b. gravity
c. tension
d. friction
___5. Which vehicle is more likely to receive a greater
impact?
a. a car because it has lesser mass.
b. a truck because of the materials used to it.
c. a truck because it has greater mass
d. a car because it has greater speed
___6. What will happen to a rolling ball if friction is not present?
a. It will suddenly stop
b. It will bounce forever
c. It wall float
d. It will stay the same
___7. What will happen to an object it there are balance
forces acting in an opposite direction?
a. It will move to the right
b. It will not move
c. It will increase its mass
d. It will lessen its mass.
___8. It refers to any object that is not moving.
a. reference point
b. kinetic energy
c. point c potential energy
d. normal force
___9. Which force is used when you are walking?
a. normal
b. applied
c. tensional,
d. frictional
___10. Two dogs are tugging on a rope, One dog pulls with a force of 15N and the other
pulls with a force of 5N. What is the resultant force?
a. 20N
b. 0N
c. 10N
d. 5N
___11. The weight of an object
a. refers to the body’s inertia
b. uses the unit kilogram
c. is the pull of Earth on a body
d. is the amount of matter in a body
___12. Complete the analogy
mass: ___ weight: ____
a. kilogram, newton
b. newton, kilogram
c. inertia, newton
d. newton, inertia
___13. When a horse pulls a wagon, the force that
causes the horse to move forward is the force
a. it exerts on the wagon
b. if the wagon exerts on the horse
c. it exerts on the ground
d. the ground exerts on the horse
___14. At constant mass, what happens to the force it acceleration is doubled
a. halved
b. quartered
c. doubled
___15. 4. Potential energy is an energy in. ___
a. height
b. place
c. force
d. gravity

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