Physical Science First Semester Exam Part 2

Question 1

The hammer is swung downwards so that its handle hits the block of wood. What is true about the forces involved?

Accepted Answer

The two forces are equal and opposite because of Newton's 3rd Law.

Question 2

When is the velocity of an object constant?

Accepted Answer

All of the above

Question 3

A dish that falls on a hard surface is more likely to break, compared to falling on a soft surface, because _____.

Accepted Answer

There's more force when it falls on a hard surface, There's a shorter impact time when it falls on a hard surface

Question 4

An apple pulls an orange along in a cart. If the orange was heavier, the acceleration would be _____.

Accepted Answer

Smaller

Question 5

A big juicy bug splats on the window of a high speed bus. Which experiences the greater impulse?

Accepted Answer

It is the same for both

Question 6

A rock is pulled to the ground by Earth's gravity. How many forces are involved?

Accepted Answer

There are two forces

Question 7

The cannon recoils when it fires a cannonball. Why is the speed of the cannon slower than the cannonball?

Accepted Answer

The cannon has more mass

Question 8

When the truck hits a haystack instead of a brick wall, it doesn't get crunched. This is because _____.

Accepted Answer

The time of impact is increased, The force is decreased

Question 9

Two students of equal mass play catch with a medicine ball while on scooters. What is true about their speed?

Accepted Answer

The two students have equal speeds

Question 10

By rolling with the punch, the boxer feels a force that is much smaller than if he had moved into the punch because ____

Accepted Answer

The time of contact is much longer

Question 11

An apple pulls an orange along in a cart. If the apple pulls harder, the acceleration will be _____.

Accepted Answer

Larger

Question 12

A big juicy bug splats on the window of a high speed bus. Which experiences the greater change in acceleration?

Accepted Answer

The bug

Question 13

What is the acceleration of something that has reached terminal velocity?

Accepted Answer

Zero

Question 14

A foot kicks a football. There is a force _____.

Accepted Answer

Of the same size on both the foot and the football

Question 15

A compressed spring is placed between a block and a block with three times the mass. When the spring is released ____.

Accepted Answer

The smaller block moves three times faster

Question 16

Which of the following has the largest momentum?

Accepted Answer

Santa's sleigh flying through the air

Question 17

Newton's Laws of Motion were named for _____.

Accepted Answer

Mr. Motion, Sir Isaac Newton, Mr. Laws

Question 18

A teacher pounds some physics into a student's head with an 800 N force from a hammer. What is the reaction force?

Accepted Answer

Exactly 800 N

Question 19

What is the velocity of something that has reached terminal velocity?

Accepted Answer

Not zero

Question 20

A big juicy bug splats on the window of a high speed bus. Which experiences the greater change in momentum?

Accepted Answer

It is the same for both

Question 21

An orange pulled along in a cart has momentum. If it had twice the mass at the same speed , momentum would be _____.

Accepted Answer

Twice as much

Question 22

A very large dog and a very small dog have a tug of war with a rope. Which dog exerts a larger force on the rope?

Accepted Answer

They both pull the same

Question 23

Two physics carts with the same mass are placed bumper to bumper. When the plunger is released _____.

Accepted Answer

Both cars move apart with the same velocity

Question 24

Two dogs have a tug of war with a rope. Both pull on the ends with a force of 100 N. What is the tension in the rope?

Accepted Answer

100 N

Question 25

During the homecoming assembly tug of war, the staff team faces off against the senior team. Which team wins?

Accepted Answer

The staff team, The staff team, gee whiz!, The staff team, duh!

Question 26

Two astronauts with the same mass have a tug of war in outer space. Where will they meet?

Accepted Answer

Directly in the middle

Question 27

A big juicy bug splats on the window of a high speed bus. Which experiences the greater force?

Accepted Answer

It is the same for both

Question 28

The force that causes the rocket to move is _____.

Accepted Answer

produced on the rocket by the exhaust gases

Question 29

A disembodied hand pulls on the string. What is the reaction to this force?

Accepted Answer

The string pulls on the disembodied hand.

Physical Science First Semester Exam Part 2

Questions 29

Physical Science First Semester Exam Part 2

Questions 29