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Week 17!!. 1. In science, a force is …. w hat you need to make someone do something how fights get started a push or a pull. usually necessary. 2. A force that resists motion between two surfaces that are pressed together is . Inertia Gravity Friction momentum.
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Week 17!! 1. In science, a force is ….. • what you need to make someone do something • how fights get started • a push or a pull. • usually necessary.
2. A force that resists motion between two surfaces that are pressed together is • Inertia • Gravity • Friction • momentum
3. What happens to an object if the forces acting upon it are unbalanced? • Its motion will not change. • The object will come to a stop. • The net force will be zero. • Its motion will change.
4. What happens to the motion of an object when the forces are balanced? • The motion changes. • The motion does not change. • The motion speed up. • The motion slows down.
5. __________ is the resistance of an object to a change in speed or direction. • Gravity • Force • Inertia • acceleration
6. __________ is the overall force acting on an object when all forces are combined. • balanced force • unbalanced force • direction force • net force
7. Newton’s __________ law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force. • first • second • third • favorite
8. _______ is an attractive force that depends on the mass of the objects and the distance between them. • Gravity • Force • Inertia • acceleration
9. All objects accelerate to the earth due to gravity at what rate? • 9.8 miles per hour • 8.9 m/s2 • 9.8 m/s/s (m/s2) • 980 m/s/s (m/s2)
10. A feather falls through the air more slowly than a brick because of • gravity • air resistance • inertia • momentum