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Newton’s Laws Review game

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**The force you have to overcome to start an object moving is_____________________.**

Rolling friction Static friction Sliding friction Air resistance

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b. Static Friction

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**Which label goes on the horizontal axis?**

Distance Force Mass Acceleration

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a. Distance

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**Which of the following is an example of a noncontact force?**

Musician playing piano Athlete hitting a ball with a bat A ball falling after you toss it in the air Karate expert breaking a stake of wood

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**c. A ball falling after you toss it in the air.**

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**An object’s weight is ________ its mass.**

Equal to Less than Proportional to Greater than

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c. Proportional

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**An arrow can be used to represent a force**

An arrow can be used to represent a force. The length of the arrow represents ____________. Direction of the force Strength of the force Mass of the force Acceleration of the force

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b. Strength of the force

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**A skater slowing as she slides across the ice is an example of ___________.**

Inertia Momentum Friction Mass

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c. Friction

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A planet is discovered that is the same size as Earth and has the same gravitational acceleration, but has twice the mass. If you weigh 700 N on Earth, on the new planet you would weight__________. 350 N 700 N 1,400 N 2,800 N

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c. 1,400 N

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**Which of the following is a force?**

Momentum Friction Acceleration Velocity

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b. Friction

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**The unit of force is _________.**

m/s The hertz The joule The newton

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d. The newton

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**Which of the following is an example of an unbalanced force?**

Book sitting on a table Car sitting in the garage Person on an elevator going down Person leaning on a wall

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**c. Person on an elevator going down**

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**The force that opposes motion is ___________.**

A balanced force An unbalanced force An accelerating force Friction

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d. Friction

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**Which of the following is a force or motion that is involved in the Moon orbiting Earth?**

A force pulling the Moon towards the center A speed at right angles to the line form the mass of the Moon to the center of Earth Acceleration towards the center of Earth All of the above

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d. All of the above

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**An unbalanced force acting on an object causes it to ___________.**

Move at a constant speed Continue in a straight line Not change its velocity Accelerate

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d. Accelerate

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**Forces that are equal in size but opposite in direction are __________.**

Balanced forces Frictional forces Inertial forces Net forces

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a. Balanced forces

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**Which of the following is NOT and example of circular motion?**

Car turning a corner Yo-yo on a string going in a circle Car accelerating onto highway The Moon’s path around Earth

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**If gravity did NOT affect the path of a horizontally thrown ball, the ball would ___________.**

Go straight up Travel horizontally Fall straight down Follow a curved path

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b. Travel horizontally

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**Unbalanced forces can make an object accelerate by __________.**

Changing its speed Changing its direction Both a and b Neither a nor b

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**c. Both a and b change its speed and direction**

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When two birds are pulling on a worm and the worm moves towards the first bird, you know that the forces are________. Long-range Action-reaction Unbalanced Balances

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c. Unbalanced

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**Which of the following keeps a satellite in orbit?**

Frictional force Kinetic force Centripetal force Acceleration force

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c. Centripetal force

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**We are able to walk forward because ____________.**

We push on the air We push on the ground The air pushes on us The ground pushes on us

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**d. The ground pushes on us**

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**A 3,000-N force gives an object an acceleration of 15 m/s**

A 3,000-N force gives an object an acceleration of 15 m/s. The mass of the object is ____________. m=f/a 45,000 kg 1,500 kg 200 kg 15 kg

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c. 200 kg

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**The relationship among force, mass, and acceleration is stated in ___________.**

The law of conservation of momentum Newton’s first law of motion Newton’s second law of motion Newton’s third law of motion

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**c. Newton’s second law of motion**

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**A 300-N force acts on a 25- kg object**

A 300-N force acts on a 25- kg object. The acceleration of the object is ____________. a=f/m 7,500 m/s^2 300 m/s^2 25 m/2^2 12 m/s^2

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d. 12 m/s^2

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**According to Newton’s second law of motion, ___________.**

F=mv F=m/a A=Fnet/m F=ma

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d. F=ma

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**An object of large mass has _____ than an object of small mass.**

Less momentum More momentum Less weight Greater acceleration

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b. More momentum

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**Which of the following is the equation for momentum?**

P=m/v P=m X v P=v/m P=w X s

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b. p= m X v

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**A student hits a nail with a hammer**

A student hits a nail with a hammer. During the collision, there is _____________. A force on the hammer but not on the nail A force on the nail but not on the hammer A force on the nail and also on the hammer No force on either object in the collision

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**c. A force on the nail and also on the hammer**

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**Which of the following best completes the phrase**

Which of the following best completes the phrase? For every action there is ___________. A reaction An equal reaction An opposite reaction An equal and opposite reaction

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**d. An equal and opposite reaction**

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Fred (m=67 kg) foolishly attempts to jump from a canoe (m=45 kg) to the dock. If he jumps forward with a speed of 3.3 m/s, how fast will the canoe move backwards 2.2 m/s 22 m/s 4.9 m/s 49 m/s

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c. 4.9 m/s

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Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the _________ direction to that of the first object. Opposite Same Right angle Vertical

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a. Opposite

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