NCSCOS 7.P.1.2- Balanced, Unbalanced, Net Force, Gravity and Friction
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Grade 7
Science
North Carolina Standard Course of Study
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- Q 1/10Score 0What is the net force of the boat?29550 N right550 N left1400 N right1400 N left
10 questions
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- Q1What is the net force of the boat?550 N right550 N left1400 N right1400 N left30s7.P.1.2
- Q2What is the net force of the box?814 N right52 N left814 N left52 N right30s7.P.1.2
- Q3What is the net force of the rocket?7800 N up7800 N down3200 N down3200 N up30s7.P.1.2
- Q4What is the best example of an unbalanced force?A train accelerating from the stationA car driving at a constant speedA chair sitting motionlessA book sitting on the shelf30s7.P.1.2
- Q5Which is an example of the law of inertia? (Newton's First Law)When the car brakes, your body continues moving forward and is stopped by the seat beltA rocket fuel ignites and pushes DOWN and the rocket moves UPIt takes more force to move a piano than to move a chair.30s7.P.1.2
- Q6Which is an example of Newton's Second Law? (Force = Mass times Acceleration)A rocket fuel ignites and pushes DOWN and the rocket moves UPWhen the car brakes, your body continues moving forward and is stopped by the seat beltIt takes more force to move a piano than to move a chair.30s7.P.1.2
- Q7Which is an example of Newton's Third Law (Every action has an equal and opposite reaction)A rocket fuel ignites and pushes DOWN and the rocket moves UPWhen the car brakes, your body continues moving forward and is stopped by the seat beltIt takes more force to move a piano than to move a chair.30s7.P.1.2
- Q8A student reads his paper on friction to the class. Which statement should he include in his paper if he wants to present accurate information?Friction reduces the amount of work needed to move an objectFriction only happens with solid objects, not liquids or gases.Friction is in the opposite direction of the movement.Friction makes movement of objects easier30s7.P.1.2
- Q9What is the force that all objects have in relation to all other objects? (The amount of the force is based on the mass of the objects)magnetismfrictionelectricitygravity30s7.P.1.2
- Q10A force can:slow an object downmake a moving object stop movingmake an object moveAll of these!30s7.P.1.2
