Question 1

Which of Newton's laws of motion explains why we need to wear seat belts in cars?

Accepted Answer

Law of Inertia

Answer

Law of Acceleration

Answer

Law of Interaction

Question 2

Object A and B both have a mass of 10kg. If the velocity of object B is doubled compared to object A, then its momentum will be __________ as much.

Accepted Answer

twice

Answer

half

Answer

squared

Answer

one-fourth

Question 3

What is the net force acting on this object?

Accepted Answer

40 N to the left

Answer

40 N to the right

Answer

110 N to the right

Answer

0 N

Question 4

A track star jogs exactly two laps around the track. Each lap is 400 m. What is the track star's displacement?

Accepted Answer

0

Answer

800 m

Answer

1200 m

Answer

400 m

Question 5

An object's resistance to any change in motion is known as what?

Accepted Answer

Inertia

Answer

Acceleration

Answer

Gravity

Answer

Forces

Question 6

How much does a pencil with a mass of 0.045 kg weigh?

Accepted Answer

.441 N

Answer

441 kg

Answer

4.41 N

Answer

.45 kg

Question 7

An object in motion will stay in motion, unless __________________.

Accepted Answer

net force acts on it.

Answer

iron man stops it.

Answer

force is balanced.

Answer

there's inertia.

Question 8

Newton's law of universal gravitation states that every mass in the universe attracts every other mass in the universe. According to this, what two things affect how much gravitational force is between two object?

Accepted Answer

mass and distance

Answer

distance and gravity

Answer

inertia and gravity

Answer

mass and gravity

Question 9

The beach is 750 miles away. If the speed limit is 75 mph, how much time will take to get to the beach?

Accepted Answer

10 hours

Answer

.1 hour

Answer

56, 250 hours

Answer

.01 hour

Question 10

A car cruises at a constant speed on a circular track. Is the car accelerating?

Accepted Answer

Yes, it's direction is constantly changing.

Answer

No, the car is not speeding up or slowing down.

Answer

Yes, because it moves at a constant speed.

Answer

No, it is moving at a constant speed.

Question 11

Describe the motion in segment C in distant-time graph.

Accepted Answer

Object is at rest.

Answer

Object is accelerating.

Answer

Object travels at a constant speed.

Answer

Object moves forward.

Question 12

Describe the motion in segment B in velocity-time graph.

Accepted Answer

Object travels at a constant velocity.

Answer

Object is at rest.

Answer

Object is accelerating.

Answer

Object moves forward.

Question 13

Which of the following is an example of vector quantity?

Accepted Answer

velocity

Answer

speed

Answer

mass

Answer

time

Question 14

Sally has a mass of 24 kg and her brother has a mass of 16 kg. They are both in a 20 kg wagon that is moving with a speed of 2.3 m/s. What is the momentum of the wagon and the children in it?

Accepted Answer

138 kg x m/s

Answer

46 kg x m/s

Answer

0.9 kg x m/s

Answer

205 kg x m/s

Question 15

Kepler's Third Law describes the relationship between the time period of a planet's orbit and its distance from the Sun. What is this relationship?

Accepted Answer

The square of the period is directly proportional to the cube of the distance.

Answer

The period is proportional to the distance.

Answer

The square of the distance is directly proportional to the cube of the period.

Answer

The cube of the period is directly proportional to the square of the distance.

Question 16

According to the Law of Universal Gravitation, the force of gravity between two objects depends on which of the following?

Accepted Answer

The masses of the objects and the distance between them.

Answer

The shape of the objects.

Answer

The speed of the objects.

Answer

Only the mass of the larger object.

Question 17

Which of the following statements is incorrect?

Accepted Answer

According to Kepler, the center of the solar system is the Earth, and planets move in elliptical orbits.

Answer

According to Copernicus, the center of the solar system is the Sun, and he believed that the planets, including Earth, traveled in perfect circular orbits.

Answer

According to Ptolemy, the center of the universe is the Earth

Answer

Brahe argued that the Earth is the center of the universe, and the Sun and Moon revolve around the Earth, while the other planets revolve around the Sun.

Question 18

Which of the following statements about motion graphs is true?

Accepted Answer

A steep slope on a speed-time graph indicates that an object is accelerating rapidly.

Answer

An upward slope on a distance-time graph represents deceleration.

Answer

A horizontal line on a distance-time graph indicates that an object is moving at a constant speed.

Answer

A downward slope on a speed-time graph indicates that the object is speeding up.

Question 19

If the mass of an object doubles while the net force acting on it remains constant, what happens to the acceleration of the object according to Newton's Second Law of Motion?

Accepted Answer

The acceleration will halve.

Answer

The acceleration will remain the same.

Answer

The acceleration will become zero.

Answer

The acceleration will double.

Question 20

The closer a planet is to the orbiting body (like a moon or another planet), the slower it generally travels in its orbit due to the stronger gravitational pull exerted by the object it is orbiting.

Accepted Answer

FALSE

Answer

TRUE

Related quizzes

Related quizzes