Physics: Forces and Motion

According to Newton's Second Law, when the same force is applied to two objects of different masses,

the object with greater mass will experience a smaller acceleration and the object with less mass will experience a greater acceleration.

What is the gravitational force acting on the balloon? a) 1520 b) 950 c) 4050 d) 5120

4050

Proposed that gravity from a mass warps space like a heavy weight on a trampoline a)Johannes Kepler b)Albert Einstein c)Tycho Brahe d)Henry Cavendish

Albert Einstein

Determined the universal gravitation constant a)Johannes Kepler b)Issac Newton c)Albert Einstein d)Tycho Brahe

Henry Cavendish

Which of the following is the tendency of an object to maintain its state of motion? a) acceleration b) inertia c) force d) velocity

Inertia

Confirmed orbits were elliptical and defined the force of gravity by math a)Issac Newton b)Albert Einstein c)Tycho Brahe d)Johannes Kepler

Issac Newton

Proposed that orbits were elliptical and increased orbital knowledge a)Tycho Brahe b)Issac Newton c)Henry Cavendish d)Albert Einstein

Johannes Kepler

Which statement about the acceleration of an object is correct?

The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the mass of the object.

A leaf falls from a tree and lands on the sidewalk. Identify an action- related pair, and compare the forces exerted on the objects

The leaf exerts a force on the sidewalk; the sidewalk exerts a force on the leaf.

Built the first observatory and charted the "stars" for over 25 years a)Albert Einstein b)Tycho Brahe c)Issac Newton d)Henry Cavendish

Tycho Brahe

Which of the following forces is an example of field force? a) gravitational force b) frictional force c) normal force d) tension

a) Gravitational Force

What is the friction force of a 5 kg box sliding with a coefficient of friction of 0.31? a) 0.158 N b) 1.55 N c) 3.04 N d) 15.2 N

b) 1.55N

A wagon with a weight of 300.0 N is accelerated across a level surface at 5.0 m.s 2. What net force acts on the wagon? a)9.0 N b)15 N c)150 N d)610 N

b) 15 N

The magnitude of the force of gravity action on an object is a) frictional force b) weight c) inertia d) mass

b) Weight

What is the gravitational force acting on the car? a) 5800 b) 775 c) 14 700 d) 13 690

c) 14 700

What is the gravitional force between two trucks each with a mass of 2.0 x 10^4 kg, that are 2.0 m apart? a) 5.7 x 10 ^ -2 N b) 1.3 x 10 ^ - 2 N c) 6.7 x 10 ^-3 N d) 1.2 x 10 ^-7 N

c) 6.7 x 10 ^-3 N

The statement by Newton that for every action there is an equal but opposite reaction is which of his laws of motion a) first b) second c) third d) fourth

c) Third

A change in the force of gravity acting on an object will affect the object's a) mass b) frictional force c) weight d) inertia

c) Weight

if a nonzero net force is action on an object then the object is definitely .. a) at rest b) moving with a constant velocity c) being accelerated d) losing mass

c) being accelerated

Which if the following forces arises from direct physical contact between two objects? a) gravitational force b) fundamental force c) contact force d) field force

c) contact force

Which of the following forces exists between objects even in the absence of direct physical contact? a) frictional force b) fundamental force c) contact force d) field force

d) Field Force

what causes a moving object to change direction? a) acceleration b) velocity c) inertia d) force

d) Force

A measure of the quantity of matter is a) density b) weight c) force d) mass

d) Mass

Which of the following is the cause of an acceleration or a change in an object's motion? a) speed b) inertia c) force d) velocity

d) velocity

A car goes forward along a level road at a constant velocity. The additional force needed to bring the car into equilibrium is .. a) greater that the normal force times the coefficient of static friction b) equal to the normal force times the coefficient of static friction c) the normal force times the coefficient of kinetic friction d) zero

d) zero

As a basketball player starts to jump for a rebound, the player begins to move upward faster and faster until his shoes leave the floor. At the moment the player begins to jump, the force of the floor on the shoe is

greater than the player's weight

A free body diagram of a ball in free fall in the presence of air resistance would show a) a downward arrow to represent the force of air resistance b) only a downward arrow to represent the force of gravity c) only a downward arrow to represent the force of gravity and an upward arrow to represent the force of air resistance d) an upward arrow to represent the force of gravity and a downward arrow to represent the force of air resistance

a downward arrow to represent the force of gravity and an upward arrow to represent the force of air resistance

A small force acting on a human- sized object causes a) a small acceleration b)no acceleration c)a large acceleration d)equilibrium

a small acceleration

Which statement does NOT describe force? a) force causes objects at rest to remain stationary b) force causes objects to start moving c) force causes objects to stop moving d) force causes objects to change direction

a) Force causes objects to remain stationary

Which of the following forces is an example of contact force? a) frictional force b) gravitational force c) magnetic force d) normal force

a) Frictional Force