Which statement regarding centripetal forces in the animation is FALSE

Centripetal force each planet feels has the same magnitude

What causes a falling body to reach terminal velocity?

When weight equals the air resistance force

Why do a feather and a bowling ball fall at the same speed in a vacuum?

All bodies accelerate at 9.8 m/s2 without a resistance force

What is happening in this video?

The truck is moving out from under the patient

How does this image demonstrate Newton's first law?

The car is trying to maintain a constant velocity

Why do you weigh less on mars?

On Mars the value of g is smaller in the equation Fg =mg

Who has more inertia and why?

The big guy because he has more mass

Why can't we safely ride on the wing of a low altitude jet airplane, but we can safely skydive?

Jets fly faster than 300 mph, which would rip body parts off, Because you reach terminal velocity which is only 120 mph

A large force is required to change his constant velocity

What happens to free falling bodies anywhere?

They initially accelerate at 9.8 m/s2

Why does the space shuttle accelerate upward?

The system is not in equilibrium, resulting in a net force, Thrust is greater than weight, creating an unbalanced force

According to Newton's second law, how can the dog out accelerate the much stronger human?

The dog has less force, but it is pushing much less mass

How does the smaller mass of mars make a specific force different there than here on Earth?

Mars smaller mass makes its gravitational force weaker, Mars smaller mass makes the weight force less there

What happens to you at the peak of mount Everest?

You weigh slightly less than at sea level

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Health Physics # 3 - Forces, Newton's 1st & 2nd laws, Weight, free fall

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Force, Newton's Laws, Weight, Gravity

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Questions 22

Answers

1
What type of forces are shown in the animation?
Balanced
At a distance only
Contact only
Unbalanced
2
Which statement regarding centripetal forces in the animation is FALSE
Gravity provides the centripetal force for every orbit
Centripetal force each planet feels has the same magnitude
Centripetal force on every planet is directly toward the sun
Earth must fell more centripetal force than Mars
3
What is a force?
Something that can be balanced or unbalanced
All of the answers are correct
How things can be moved without touching them
Any push or pull
4
What causes a falling body to reach terminal velocity?
When weight equals the air resistance force
You reach the sound barrier
You are so scared the release of gasses propels you upward
Gravity can no longer apply a force to a fast falling body
5
Why do a feather and a bowling ball fall at the same speed in a vacuum?
Because a vacuum makes them both equally weightless
The vacuum sucks force them both down at the same rate
This doesn't really happen, heavy bodies always fall faster
All bodies accelerate at 9.8 m/s2 without a resistance force
6
Which of the following is NOT a force?
magnetism
gravity
acceleration
weight
7
If the same force is applied to each object, which must have the lowest mass?
The top
The bottom
Third from the bottom
Second from the bottom
8
What is happening in this video?
The truck is moving out from under the patient
None of the answers are correct
The patient is being thrown off the truck by sideways force
The paramedics are pushing the patient off the truck
9
If Thor's hammer weighs 1 x 10⁵ N, what is its approximate mass on Earth?
1 million kg
1000 kg
100,000 kg
10,000 kg
10
How does this image demonstrate Newton's first law?
The car is trying to maintain a constant velocity
It proves that a force is required to keep an object moving
Unbalanced forces keep the car from moving
The truck needs a force to keep moving
11
How fast is a skydiver falling 3 seconds after jumping out of a plane?
Approximately 29 m/s
Approximately 3 m/s
Exactly 9.8 m/s
Approximately 290 m/s
12
Why do you weigh less on mars?
Because you have very little to eat when traveling to mars
On Mars the value of g is smaller in the equation Fg =mg
Because Mars weighs less than Earth
Because your mass is less on Mars
13
Who has more inertia and why?
The little guy because he's moving faster
The big guy because he has more mass
The big guy because he weighs more
The little guy because he is winning
14
Why can't we safely ride on the wing of a low altitude jet airplane, but we can safely skydive?
Jets fly faster than 300 mph, which would rip body parts off
Because you reach terminal velocity which is only 120 mph
Because air friction on a jet wing will make you burn up
Because the jet engine would cook us
15
Why can't he stop?
A large force is required to change his constant velocity
He has too little inertia
He weighs too much
He is applying too much forward force
16
What happens to free falling bodies anywhere?
They feel no resistance force
They initially accelerate at 9.8 m/s2
None of the answers are correct
They speed up constantly
17
What is this?
The reason all bodies fall at the same rate in a vacuum
The basis for the Weight and Normal force equations
Newton's second law
All of the answers are correct
18
Why does the space shuttle accelerate upward?
The system is not in equilibrium, resulting in a net force
Thrust is greater than weight, creating an unbalanced force
There are no downward forces, only the upward thrust force
Balanced forces keep it from falling
19
If your scale says your mass is 110 kg, what is your weight on Earth?
11.22 Newtons
1078 Newtons
242 pounds
110000 grams
20
According to Newton's second law, how can the dog out accelerate the much stronger human?
A smaller mass requires more force to accelerate it
A larger mass requires less force to accelerate it
Because Newton's laws don't apply to animals
The dog has less force, but it is pushing much less mass
21
How does the smaller mass of mars make a specific force different there than here on Earth?
Mars smaller mass makes Mars red instead of blue like Earth
Mars smaller mass makes its gravitational force weaker
Mars smaller mass makes the inertia force different
Mars smaller mass makes the weight force less there
22
What happens to you at the peak of mount Everest?
There is less air so you get heavier
You have more energy because you are closer to the sun
You become nearly weightless because you are near space
You weigh slightly less than at sea level

Health Physics # 3 - Forces, Newton's 1st & 2nd laws, Weight, free fall Flashcards | StudBud