Newton’s Laws

Review game

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

a. Rolling frictionb. Static frictionc. Sliding frictiond. Air resistance

b. Static Friction

Which label goes on the horizontal axis?

a. Distanceb.Forcec. Massd.Acceleration

a. Distance

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

a. Musician playing pianob. Athlete hitting a ball with a batc. A ball falling after you toss it in the aird. Karate expert breaking a stake of wood

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

An object’s weight is ________ its mass.

a. Equal tob. Less thanc. Proportional tod. Greater than

c. Proportional

An arrow can be used to represent a force. The length of the arrow

represents ____________.

a. Direction of the forceb. Strength of the forcec. Mass of the forced. Acceleration of the force

b. Strength of the force

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

___________.

a. Inertiab. Momentumc. Frictiond. Mass

c. Friction

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__________.

a. 350 N b. 700 Nc. 1,400 Nd. 2,800 N

c. 1,400 N

Which of the following is a force?

a. Momentumb. Frictionc. Accelerationd. Velocity

b. Friction

The unit of force is _________.

a. m/sb. The hertzc. The jouled. The newton

d. The newton

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

a. Book sitting on a tableb. Car sitting in the garagec. Person on an elevator going downd. Person leaning on a wall

c. Person on an elevator going down

The force that opposes motion is ___________.

a. A balanced forceb. An unbalanced forcec. An accelerating forced. Friction

d. Friction

Which of the following is a force or motion that is involved in the

Moon orbiting Earth?

a. A force pulling the Moon towards the centerb. A speed at right angles to the line form the

mass of the Moon to the center of Earthc. Acceleration towards the center of Earthd. All of the above

d. All of the above

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

a. Move at a constant speedb. Continue in a straight linec. Not change its velocityd. Accelerate

d. Accelerate

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

a. Balanced forcesb. Frictional forcesc. Inertial forcesd. Net forces

30 N 30 N

a. Balanced forces

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

a. Car turning a cornerb. Yo-yo on a string going in a circlec. Car accelerating onto highwayd. The Moon’s path around Earth

If gravity did NOT affect the path of a horizontally thrown ball, the ball

would ___________.

a. Go straight upb. Travel horizontallyc. Fall straight downd. Follow a curved path

b. Travel horizontally

Unbalanced forces can make an object accelerate by __________.

a. Changing its speedb. Changing its directionc. Both a and bd. Neither a nor b

c. Both a and bchange its speed and direction

When two birds are pulling on a worm and the worm moves

towards the first bird, you know that the forces are________.

a. Long-rangeb. Action-reactionc. Unbalancedd. Balances

c. Unbalanced

Which of the following keeps a satellite in orbit?

a. Frictional forceb. Kinetic forcec. Centripetal forced. Acceleration force

c. Centripetal force

We are able to walk forward because ____________.

a. We push on the airb. We push on the groundc. The air pushes on usd. The ground pushes on us

d. The ground pushes on us

A 3,000-N force gives an object an acceleration of 15 m/s. The mass of the object is ____________.

m=f/a

a. 45,000 kgb. 1,500 kgc. 200 kgd. 15 kg

c. 200 kg

The relationship among force, mass, and acceleration is stated in

___________.

a. The law of conservation of momentumb. Newton’s first law of motionc. Newton’s second law of motiond. Newton’s third law of motion

c. Newton’s second law of motion

A 300-N force acts on a 25- kg object. The acceleration of the object is ____________. a=f/m

a. 7,500 m/s^2b. 300 m/s^2c. 25 m/2^2d. 12 m/s^2

d. 12 m/s^2

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

a. F=mvb. F=m/ac. A=Fnet/md. F=ma

d. F=ma

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

a. Less momentumb. More momentumc. Less weightd. Greater acceleration

b. More momentum

Which of the following is the equation for momentum?

a. P=m/vb. P=m X vc. P=v/md. P=w X s

b. p= m X v

A student hits a nail with a hammer. During the collision,

there is _____________.

a. A force on the hammer but not on the nailb. A force on the nail but not on the hammerc. A force on the nail and also on the hammerd. No force on either object in the collision

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

Which of the following best completes the phrase? For every

action there is ___________.

a. A reactionb. An equal reactionc. An opposite reactiond. An equal and opposite reaction

d. An equal and opposite reaction

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

a. 2.2 m/sb. 22 m/sc. 4.9 m/sd. 49 m/s

c. 4.9 m/s

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.

a. Oppositeb. Samec. Right angled. Vertical

a. Opposite