1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Y_Kistochka [10]
3 years ago
9

A projectile is launched at some angle to the horizontal with some initial speed vi, and air resistance is negligible.(a) Is the

projectile a freely falling body? (b) What is its acceleration in the vertical direction? (c) What is its acceleration in the horizontal direction?
Physics
1 answer:
Paul [167]3 years ago
8 0

Answer:

Explanation:

When a projectile is launched at some angle to the horizontal with some speed vi , and air resistance is negligible , it is definitely a freely falling body .

It is so because it is free to accelerate towards the earth with acceleration of g . Air has no resistance , hence no force is acting on it except the gravitational force . Hence it is a freely falling body .

b )

The acceleration in the vertical direction is due to force exerted by the earth that is gravitational force on it  . Hence its  acceleration is equal to g in vertically downward direction .

c )

It has zero acceleration in horizontal direction . It is so because no force is acting on it in horizontal direction . So no acceleration will be present in horizontal direction . It will move in horizontal direction with constant speed of vi cos θ where θ is the angle vi make with the horizontal .

You might be interested in
Based on the diagram below, rank the three objects from least dense to most dense
Elodia [21]
I believe it is c because the least dense would be on top. so x is least dense, then y, and then z
6 0
3 years ago
A shunting engine in a rail yard is working on a straight east-west section of line. First it travels west for 150 s with an ave
Ymorist [56]

Displacement-1

\\ \rm\longmapsto Velocity(Time)

\\ \rm\longmapsto 150(4)

\\ \rm\longmapsto 600m

Displcaement-2

\\ \rm\longmapsto 200(3)

\\ \rm\longmapsto 600m

Total displacement=600+600=1200m

7 0
2 years ago
Read 2 more answers
Vesna Vulovic survived the longest fall on record without a parachute when her plane exploded and she fell 5 miles, 733 yards. W
Valentin [98]

Answer:

8717 meters.

Explanation:

We need to know the conversion factors. We know that:

1 mile = 1609.34 meters

1 yard = 0.9144 meters

This means that:

\frac{1609.34 meters}{1 mile}=1

\frac{0.9144 meters}{1 yard}=1

It is convenient to leave the units we want at the end in the numerator so the ones in the denominator cancel out with the ones we want to remove, as will be seen in the next step.

We will convert first the miles, then the yards, and add them up.

5miles=5miles\frac{1609.34 meters}{1 mile}=8046.7meters

733yards=733yards\frac{0.9144 meters}{1 yard}=670.2552meters

So total distance is the sum of these,  8717 meters.

8 0
3 years ago
A Van de Graaff generator is charged with 2.82 x 106C of positive charge.
Anvisha [2.4K]
B becuse that’s is right
3 0
2 years ago
Four wires are made of the same highly resistive material, cut to the same length, and connected in series. Wire 1 has resistanc
Paraphin [41]

Answer:

V_2 = \frac{R_2 V_0}{R_1+R_2+R_3+R_4}

Explanation:

The 4 wires are connected in series: this means that the same current flow through them, and the voltage of the battery, V0, is equal to the sum of the voltages on each individual resistor:

V_0=V_1+V_2+V_3+V_4

Also, the equivalent resistance of the series circuit is

R_{eq}=R_1+R_2+R_3+R_4

The voltage V2 across wire 2 is given by Ohm's law:

V_2 = R_2 I (1)

where I is the total current in the circuit, which is given by:

I=\frac{V_0}{R_{eq}}=\frac{V_0}{R_1+R_2+R_3+R_4}

Substituting this into eq. (1), we find an expression for V2:

V_2 = \frac{R_2 V_0}{R_1+R_2+R_3+R_4}

8 0
3 years ago
Other questions:
  • What is the closest of a measurement to the actual value being measured
    10·1 answer
  • What term in physical science is defined as a change in position
    11·1 answer
  • Two students push a heavy crate across the floor. John pushes with a force of 185 N due east and Joan pushes with a force of 165
    14·1 answer
  • Which often results from great variations in a habitat’s abiotic conditions?
    9·2 answers
  • Which one of the following represents the number of units of each substance
    5·1 answer
  • In any one material, all electromagnetic waves have the same
    8·1 answer
  • 4. A moped travels 20 kilometers in 30 minutes. Calculate its average speed in km/h?
    15·2 answers
  • Two asteroids collide while traveling at constant velocities. Ignoring their gravitational attraction to each other, the forces
    5·1 answer
  • Multiple choice: Sunspots appear dark because
    8·1 answer
  • a person walks 750m due north then 250 m due east of the entire walk takes 12 min find the person average velocity​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!