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American National Curriculum

High School

Physics

Force And Motion

Force And Motion - Physics Questions asked by Filo students

Question 1

A boat begins on the east side of a river and heads straight WEST across the river with a speed of 2.1 ft/s (relative to the water). The river water flows SOUTH at a speed of 3.6 ft/s (relative to the shore). The resultant velocity of the boat (relative to the shore) is approximately ft/s at degrees (CCW from east). Enter the two answers in their respective order.

1.5
4.17
5.7
206.7 e. 210.3

Topic:

Force and Motion

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Question 2

A 3.1.2 Qutr: Newton's Laws of Motion Question 2 of 10 How can Newton's third law describe the forces affecting a rocket as it descends to Earth's surface?

The rocket can move downward because the forces acting on it are unbalanced.
The rocket pushes through the air with a force equal to that of Earth's gravity pulling on the rocket.
The force the rocket exerts on the air is in the direction opposite to the force that the air exerts on the rocket.
The maximum amount of force the rocket engines can provide determines how much mass the rocket can lift.

Topic:

Force and Motion

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Question 3

Use the graphs below for question 14 Three objects can only move along a straight, level path. The graphs above show the position

d

of each of the objects plotted as a function of time

t

. 14. The sum of the forces on the object is zero in which of the cases?

II only
III only
I and II only
I and III only
I, II, and III

Topic:

Force and Motion

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Question 4

1 kg = \frac{1}{100}

new nit (i) In new gystem of units, mass = lo kg , length

= 10 m

fime

= 1

min

then 1 joule ? new unt

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Force and Motion

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Question 5

2/10

The velocity of a car increases from

2.0 m / s

16 m / s

in a time period of

3.5 s

. What is the car's average acceleration?

Topic:

Force and Motion

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Question 6

Find the total mass of two objects that weigh 314 newtons and 271 newtons.

Topic:

Force and Motion

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Question 7

Select the correct answer. A bicycie traveled 150 metirs west from point A to point B. Then k took the same route and came back to point A. it took a total of 2 minutes for the blicyde to return to point A. What is the average speed'and average velocity of the bicycle?

The average speed is $2.5$ meerssecond, and the arerage velocity is $2.5$ meters/second ease
The average speed is 0 meters'second, and the average velocity is $2.5$ meters/second esst.
The average speed and average velocity are both 0 meters/second.
The average speed is $2.5$ meters/second, and the average velocity is 0 J. o meters/second.

Topic:

Force and Motion

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Question 8

Directions: Each set of lettered choices refers to the it. Select the one lettered choice that best answers e corresponding oval on the answer sheet. A choice ma Questions 1-5 relate to the following physical principles or topics.

pressure
energy
work
force
centripetal acceleration

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Force and Motion

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Question 9

Type the correct answer in the box. Cindy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minute for the next 350 meters, and 3 minutes for the rest. Cindy's average speed for the entire run is Hint: average speed

= \frac{total diptance}{total time}

meters per minute. One kilometer is the same as 1,000 meters.

Topic:

Force and Motion

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Question 10

How quickly does a 100kg object accelerate when pushed with a 400N force?

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Force and Motion

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Question 11

What is the initial speed of a shopping cart if it ends up going 20m/s in 4 seconds and has an acceleration of 2 m/s

Topic:

Force and Motion

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Question 12

Question 1 The equations of uniform circular motion (UCM) only apply when an object is moving in a perfect circle at constant speed. True False

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Force and Motion

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Question 13

Two identical springs have a spring constant of

30.0 N / cm

. They are parallel to each other. What load is needed to produce an extension of

3.60 cm

with both springs?

120 N

4.15 N

216 N

30.0 N

Question 18 4 pts Calculate the torque produced by a

50.0 N

perpendicular force at the end of a

0.300 m

long wrench.

50.0 Nm

130 Nm

Topic:

Force and Motion

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Question 14

3. (Honors) In a friendly soccer game, you hit a ball with a speed of

13 m / s

at an angle of 24 degrees above the horizontal. (A) How long does it take for the ball to reach the goal if it is

4.2

meters away? (B) How high is the ball

\frac{23 t ^{\circ}}{shen}

4. A golf ball is struck with a five iron on ground level. It lands

92.2 m

away

4.3

seconds later. What was the angle and magnitude of the initial velocity?

Topic:

Force and Motion

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Question 15

(A) How high is the diff that the cannon ball is shot from? (B) How far from the base of the cliff does the ball land? (1)

v_{y} = 10 sin 8 0^{\circ} = - 5.016

Δ y = - 5 (2.2) + \frac{1}{2} (- 9.81) (2 2^{2})

\frac{Δ y}{Δ y} = - 11 + 619.8)

Δ y = 30.8

Δ x = 10 cos (3 0^{\circ}) (32)

Δ x = 19.05 m

8. If the same cannon (from question 47 ) is shot from the same height and same angle and the canon ball lands on another cliff that is lower in

1.7

seconds. How high is the lower cliff from the ground? just change time then subtract heights

Δ y = - 5 (1.7) + \frac{1}{2} (- 9.81) (1. - 1 Δ y =

Topic:

Force and Motion

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Question 16

9. A ball rolls off a table and falls

.75 m

to the floor, landing with a speed of

4 m / s

. (A) What is the acceleration of the ball just before it strikes the ground? (B) What was the initial speed of the ball? (C) What initial speed must the ball have if it is to land with a speed of

5 m / s

? 399

(A) V_{f}^{2} = V_{x^{2}}^{2} + V_{g_{f}}^{2} V_{f} = 4 m / s 16 - v_{x^{2}} = Vyp_{y}^{2}

Topic:

Force and Motion

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Question 17

Please identify the correct steps to a Kimura arm lock:

1. Grab the wrist. 2. Grab the inside elbow. 3. Drag the arm inside 4. step at the same time.
1. Grab the inside elbow 2. pull on the head 2. Lift the elbow to the sky 3. Bring hand to head.
1. Grab their wrist. 2. swing your other arm over the top of same arm. 3. Grab your own wrist. 4. lift elbow high, keep arm bent and lean on them asyou step around.
1. Wax hand off. 2. Drag the arm. 3. Grab the leg. 4. swing the leg around with pivot step.

Topic:

Force and Motion

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Question 18

326 Rank the following elements in order of the size of their atoms from smallest to largest;

{"2. cesium, Cs, atomic number 55; silver, Ag, atomic number 47; oxygen, 0 , atomic number 8 .","B $I$ U $S x_{i} x^{p r im e} q u a d I_{x} A - De lt a c d o t v a rr h o$ Source","Page 326 Rank the following elements according to how difficult it is for them to lose an electron. List","3. the element that has the most difficult time losing an electron last: cesium, Cs, atomic"}

Topic:

Force and Motion

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Question 19

Question 2 (1 point) An object is moving in a circle at a constant speed in a 'clockwise fashion.' A 'God's eye' view of the circle is shown. For the indicated position ( 3 o'clock), the directon of the vilocin wactoris represented by ivtter

Topic:

Force and Motion

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Question 20

Contact Forces Quiz (2) (5) normat force." Which of the following statenents correcty justifies the studen's daim?

The claim is correct because the charged particles of the table exit a downward attractive torce on the chuges panices of the book
The claim is correct because the charged particles of the tahte eneta a comnward tepulivetofoce on the charged pancies of ver book::. The claim is incorrect because the chiarged particles of toe table enett an upward iesulave force on the charged particies of the book.
The claim is inconect because the chaiped parvdes of the toole enert an wowad athactict torie on the chapped putciles of the book

Topic:

Force and Motion

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