When Ronda Rousey got kicked in the face, What is the interaction pair?

Ronda Rousey and media criticism

A book rests on a table. The force of gravity pulls down on the book with a force of 20 newtons. What prevents the books from accelerating downward at 9.8 m/sec 2

The table presses back up on the book with an equal and opposite force of 20 newtons.

The table presses back up on the book with a force greater than 20 newtons.

The table and the book together are accelerating downwards at 9.8 m/sec 2

The inertia of the book holds it up

Which car is accelerating?

A ar that rounds a curve at a constant speed

A car traveling at a constant speed

A car that has a set speed of 60mph

What happens when unbalanced forces act on an object at rest?

the object begins moving in the direction of the net force

the object begins moving in an unpredictable direction

the object begins moving opposite to the direction of net force

The acceleration produced by a net force on an object is

inversely proportional to the mass of the object.

directly proportional to the magnitude of the net force.

in the same direction as the net force.

What kind(s) of objects have inertia?

only objects whose motion is being changed

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

constant motion in a straight line

slowing motion in a straight line

accelerating motion in a straight line

constant motion in an unpredictable direction

change the direction of the motion

friction is a force that acts

opposite to the direction of the motion

in the same direction as the motion

the same direction as the applied force

What is Newton's First Law

An object at rest stays at rest, an object in motion stays in motion.

Every action has an equal and opposite reaction

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

zero, since no force is requires to keep it moving.

twice the force with which it was fired

the same amount of force with which it was fired

1/2 the force with which it was fired

An object following a straight-line path at a constant speed

has a net force acting in the direction of motion

Physical Science Comp

Authored by Charles Martinez

Physics

KG - University

NGSS covered

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98 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The units for momentum are

m/s

kg-m/s

kg/m/s

Tags

NGSS.HS-PS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The law of conservation of momentum states that,

p before is less than p after

p before is the same as p after

p before is more than p after

Tags

NGSS.HS-PS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

0.1 kg-m/s

1 kg-m/s

10 kg-m/s

100 kg-m/s

Tags

NGSS.HS-PS2-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When the speed of an object is doubled, its momentum

remains unchanged in accord with the conservation of momentum.

doubles

quadruples

decreases

Tags

NGSS.HS-PS2-2

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which object listed below has the greatest momentum?

A 0.05 kg object rolling at 0.2 m/s.

A 0.15 kg object rolling at 2 m/s.

A 0.15 kg object rolling at 1 m/s

A 0.4 kg object rolling at 2 m/s.

Tags

NGSS.HS-PS2-2

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

74.4 kg

6030 kg

0.0134 kg

80 kg

Tags

NGSS.HS-PS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If 2 objects collide and stick together, what will happen to their velocities?

velocities will increase

velocities will decrease

velocities will stay the same

none of the above

Tags

NGSS.MS-PS2-1

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Physical Science Comp

The units for momentum are

The law of conservation of momentum states that,

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

When the speed of an object is doubled, its momentum

Which object listed below has the greatest momentum?

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

If 2 objects collide and stick together, what will happen to their velocities?

What is the formula for calculating momentum?

The measure of the pull of gravity on an object is ___________________.

Which of Newtons laws explains why football teams have big, large, fast athletes.

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