Review Gravity Tennis Lab & Wksht

Question 1

What two forces are at work when a tennis racket hits a tennis ball upward?

Accepted Answer

Downward force of gravity & the upward force of the Racket

Question 2

If a ball is hit upward at 18 m/s, at what speed should it hit the ground?

Accepted Answer

Approximately 18 m/s

Question 3

What is the vocabulary word used to describe air resistance?

Accepted Answer

drag

Question 4

The bouncy ball kick distance was 20 yards, the soccer ball's was 25 yards. What is % change?

Accepted Answer

25 %

Question 5

It takes 1.73 seconds for this ball to drop 15.14 meters. What is its acceleration?

Accepted Answer

9.8 meters/second2, 32 feet/second2

Question 6

How much faster is a ball hit upward at 15 m/s than a ball hit upward at 12 m/s? (% Difference)

Accepted Answer

25%

Question 7

An object at rest will remain at rest... is a part of Newton's

Accepted Answer

First Law

Question 8

If you hit the ball upward at 18 m/s, what is the approximate total flight time of the ball?

Accepted Answer

3.5 seconds

Question 9

The rate of change in distance (or distance divided by time) is...

Accepted Answer

velocity

Question 10

This is a graph that represents...

Accepted Answer

Freefall distance versus time

Question 11

What does m/s represent in the metric system? (example: velocity was 18 m/s)

Accepted Answer

meters per second

Question 12

What is the value for acceleration due to gravity?

Accepted Answer

32 feet/second2, 9.8 meters/second2

Question 13

A yard is about as long as

Accepted Answer

36 inches (3 feet)

Question 14

What number can you multiply "meters" by to convert to "feet"? (Ex. 1 meter = ? feet)

Accepted Answer

multiply by a little more than 3

Question 15

What is the % difference between an initial velocity of 10 m/s and a final velocity of 30 m/s?

Accepted Answer

200 %

Question 16

Why did we need to have at least two different balls to kick in this experiment?

Accepted Answer

One was the "control"; other was the "Independent Variable"

Question 17

The independent variable is the ________ and the dependent variable is the _________.

Accepted Answer

cause, effect

Question 18

Change in speed is also known as

Accepted Answer

acceleration

Question 19

On the Evander football field, distance is measured in

Accepted Answer

yards

Question 20

Forces come in pairs is also known as Newton's

Accepted Answer

Third Law

Question 21

Which word below means: The “effect” that you will be measuring.

Accepted Answer

The Dependent Variable

Question 22

What happens to velocity during every second of freefall?

Accepted Answer

Velocity increases by the same amount every second

Question 23

About how high up will a tennis ball travel if it is hit upward at 18 m/s ?

Accepted Answer

50 feet

Question 24

What is Best answer: The greater the slope, the greater the

Accepted Answer

Answers 1, 2 & 3 are all accurate

Question 25

What "imperial system" speed is about equal to 18 m/s (metric system)

Accepted Answer

40 miles per hour (mph)

Question 26

The acceleration of an object is directly proportional to the force applied to that object.

Accepted Answer

Second Law

Question 27

Which of the following numbers is closest in distance to 50 feet?

Accepted Answer

15 meters

Question 28

For every action, there is an equal and opposite reaction

Accepted Answer

Third Law

Question 29

What famous object is in this picture?

Accepted Answer

Joel Castro, The Immaculate Conception Church, Jermaine Decambre, Batman

Question 30

This YELLOW LINE on this graph represents...

Accepted Answer

Freefall velocity versus time

Question 31

What exactly was the dependent variable in our ball kicking experiment?

Accepted Answer

the distance that the ball traveled in the air

Question 32

What is the fancy math name for a curve, or graph that looks like this?

Accepted Answer

a parabola

Question 33

A parabola is an equation with a "squared" term in it. What is the freefall distance equation?

Accepted Answer

distance = 1/2(a)(t)2

Question 34

The rate of change in velocity (or velocity) divided by time) is...

Accepted Answer

acceleration

Question 35

What goes up must come down best describes Newton's

Accepted Answer

Law of Universal Gravitation

Question 36

Why is acceleration due to gravity smaller on the moon than on Earth?

Accepted Answer

the moon is less massive than Earth

Question 37

The acceleration of an object is Inversely proportional to the mass of that object.

Accepted Answer

Second Law

Question 38

How many feet will a ball fall in the first second of free fall?

Accepted Answer

16 feet

Question 39

What variable would have the greatest effect on an object's drag, or air resistance?

Accepted Answer

diameter (width)

Review Gravity Tennis Lab & Wksht

Questions 39

Review Gravity Tennis Lab & Wksht

Questions 39