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Delvig [45]
2 years ago
5

A ball is fired from a cannon from the top of a cliff as shown below. Which of the paths 1 - 5 would the cannonball most closely

follow?

Physics
2 answers:
vladimir1956 [14]2 years ago
6 0

When a ball is fired from a cannon horizontally, then it will follow the projectile path. So the cannonball most closely follow the path number 2.

You can also see in the attachment my drawing.

----

<h3>Which of the paths below would the puck most closely follow after receiving the kick?</h3>

<u>The answer is B.</u>

C, D and E describe curved paths which indicate accelerated motion over time. Since the kick was “swift” the force on the puck, and therefore its acceleration was instantaneous. The horizontal motion in A is cancelled out, which would imply a force to stop it in the horizontal direction, which did not occur.

<h3>Vector A is directed northward and vector B is directed eastward. Which of the following vector addition diagrams best represent the addition of vectors A and B and the subsequent resultant?</h3>

The graphical representation of A directed northward, and B directed eastward. <u>The vector representing a b most closely</u> is by adding the tail of one of the vectors to the head of the other vector.

Looking our options the answer will be (E).

<h3>Two metal balls are the same size but one weighs twice as much as the other. The balls are dropped from the roof of a single story building at the same instant of time. The time it takes the balls to reach the ground below will be:</h3>

The answer is about the same for both balls. For more explanations go to brainly.com/question/14173803

<h3>A boy throws a steel ball straight up. Consider the motion of the ball only after it has left the boy's hand but before it touches the ground, and assume that forces exerted by the air are negligible. For these conditions, the force(s) acting on the ball is (are):</h3>

The answer is "an almost constant downward force of gravity only." For more explanations, go to brainly.com/question/19578722

<h3>An elevator is being lifted up an elevator shaft at a constant speed by a steel cable as shown in the figure below. All frictional effects are negligible. In this situation, forces on the elevator are such that:</h3><h3>(A) the upward force by the cable is greater than the downward force of gravity.</h3><h3>(B) the upward force by the cable is equal to the downward force of gravity.</h3><h3>(C) the upward force by the cable is smaller than the downward force of gravity.</h3><h3>(D) the upward force by the cable is greater than the sum of the downward force of gravity and a downward force due to the air.</h3><h3>(E) none of the above. (The elevator goes up because the cable is being shortened, not because an upward force is exerted on the elevator by the cable).</h3>

The answer is (B). Remember about constant speed.

<h3>Which path in the figure at right would the ball most closely follow after it exits the channel at "r" and moves across the frictionless table top?</h3><h3>a. Path 1</h3><h3>b. Path 2</h3><h3>c. Path 3</h3><h3>d. Path 4</h3><h3>e. Path 5</h3><h3 />

The answer is (B). Velocity in a circular motion is tangential. That's why it will remain in the same direction of tangent. It closely moves in straight line path so it follows the path B. Velocity

<h3>A student throws a ball to a friend which of the following causes the ball to fall downward</h3>

The answer is Gravity. Gravity caused the ball to fall.

<h3>The figure below shows a boy swinging on a rope, starting at a point higher than A. Consider the following distinct forces:</h3><h3>1. A downward force of gravity.</h3><h3>2. A force exerted by the rope pointing from A to O.</h3><h3>3. A force in the direction of the boy’s motion.</h3><h3>4. A force pointing from O to A.</h3><h3>Which of the above forces is (are) acting on the boy when he is at position A?</h3><h3>(a) 1 only.</h3><h3>(b) 1 and 2.</h3><h3>(c) 1 and 3.</h3><h3>(d) 1, 2, and 3.</h3><h3>(e) 1, 3, and 4.</h3>

The answer is A. Only the force of gravity and the tension force from the swing act on the person.

Lina20 [59]2 years ago
5 0

When the cannonball is fired from the cliff, it will most closely follow the path 2.

<h3>What is a projectile motion?</h3>

This a type of motion in which the projectile experiences the influence of Earth gravity causing the projectile take a parabolic  or curved trajectory.

The cannonball is an example of a projectile and its path of motion will be parabolic or curved.

From the given graph;

  • The path 1 is a linear path
  • The path is a parabolic path
  • The path 3-5 is linear and curved

Thus, when the cannonball is fired from the cliff, it will most closely follow the path 2.

Learn more about trajectory of a projectile here: brainly.com/question/1912408

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what is the density of a substance that has a mass of 2.0 g , and when placed in a graduated cylinder the volume changed from 70
lubasha [3.4K]

A material with a mass of 2.0 g when placed in a graduated cylinder the volume changed from 70 ml to 75 ml has a density of 0.4 g/mL.

How do I calculate the substance's density?

We'll start by getting the substance's volume. This is attainable as follows:

Water volume: 70 mL

75 mL = volume of material + water.

Substance volume =?

Substance volume equals (substance volume plus water) - (Volume of water)

Substance volume = 75 - 70

5 mL is the substance's volume.

Finally, we will calculate the substance's density. Below is an example to help:

2.0 g is the substance's mass.

5 mL is the substance's volume.

Substance density =?

Mass / volume equals density.

Substance density = 2/5

0.4 g/mL is the substance's density.

The density is therefore 0.4 g/mL.

To know more about density, visit:

brainly.com/question/952755

#SPJ4

6 0
1 year ago
Una barra de plata de 335.2 g con una temperatura de 100 ºC se introduce un calorímetro de aluminio de 60 g de masa que contiene
sdas [7]

Respuesta:

0,0560 cal / gºC.

Explicación:

Cantidad de calor; (Q)

Q = mcΔt; Δt = t2 - t1

m = masa, c = capacidad calorífica específica; Δt = cambio de temperatura

c de agua = 1 cal / gºC

c de aluminio = 0,22 cal / gºC

QTotal = Q de agua + Q de aluminio

Q de agua = 450 * 1 * (26 - 23) = 1350 cal

Q de aluminio = 60 * 0.22 * (26 - 23) = 39.6 cal

QTotal = 1350 + 39,6 = 1389,6 cal

Calor perdido = calor ganado

QTotal = calor perdido

- 1389,6 = 335,2 * c * (26 - 100)

-1389,6 = −24804,8 * c

c = 1389,6 / 24804,8

c = 0,056021 cal / gºC.

Capacidad calorífica específica de la plata = 0,0560 cal / gºC.

8 0
3 years ago
By what means can the internal energy of a closed system increase?.
kirill115 [55]

Answer:

when work is done on the system or heat comes into the system

7 0
2 years ago
Read 2 more answers
What hazardous wastes are common in ordinary households? What can you do to reduce the impact you make on the environment from t
labwork [276]

Answer:

The most common products include aerosols, anti-freeze, asbestos, fertilizers, motor oil, paint supplies, photo chemicals, poisons, and solvents, cleaning supplies.

Explanation:

Use homemade cleaners

You can find local retailers to take rechargeable batteries from laptop computers, cordless power tools, cellular and cordless phones, and camcorders at the Rechargeable Battery Recycling Corporation’s website

3 0
2 years ago
a 90 kg architect is standing 2 meters from the center of a scaffold help up by a rope on both sides. the scaffold is 6m long an
Mademuasel [1]
We can solve the problem by requiring the equilibrium of the forces and the equilibrium of torques.

1) Equilibrium of forces:
T_1 - W_p - W_s + T_2 =0
where
W_p = (90kg)(9.81 m/s^2)=883 N is the weight of the person
W_s = (200kg)(9.81 m/s^2)=1962 N is the weight of the scaffold
Re-arranging, we can write the equation as
T_1 = 2845 N-T_2 (1)

2) Equilibrium of torques:
T_1 \cdot 3 m - W_p \cdot 2 m - T_2 \cdot 3m =0
where 3 m and 2 m are the distances of the forces from the center of mass of the scaffold.
Using W_p = 883 N and replacing T1 with (1), we find
2845 N \cdot 3 m - T_2 \cdot 3 m - 833 N \cdot 2 m - T_2 \cdot 3 m=0
from which we find
T_2 = 1128 N

And then, substituting T2 into (1), we find
T_1 = 1717 N
8 0
3 years ago
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