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wariber [46]
3 years ago
11

If you drop a bowling ball, a tennis ball, and a feather from the top of a tall building at the same time which one will hit the

ground first?
( in the absence of air resistance)
A. the bowling ball
B. the tennis ball
C.the feather
D.they will all hit the ground at the same time
E.it is not possible to predict
Physics
2 answers:
Whitepunk [10]3 years ago
6 0
In the absence of air resistance the result is D .
mario62 [17]3 years ago
6 0

Answer:

If we Drop any object there is gravity acts on it and the air resistance but since, we are given the condition in absence of air resistance

So, we will consider only the gravity and due to gravity all the three bowls bowling ball, a tennis ball, and a feather from the top of a tall building will hit the ground at same time.

Hence, The option D is correct.

Option A,B,C and E are discarded.

You might be interested in
Gamma rays transmit more energy than visible light rays because they possess a greater _____
lukranit [14]
Gamma rays transmit more energy than visible light rays because they possess a greater frequency

E = h x frequency

they are directly proportional
4 0
3 years ago
Read 2 more answers
2. While standing near a bus stop, a student hears a distant horn beeping. The frequency emitted by the horn is 440 Hz. The bus
jarptica [38.1K]

Given Information:

Frequency of horn = f₀ = 440 Hz

Speed of sound = v = 330 m/s

Speed of bus = v₀ = 20 m/s

Answer:

Case 1. When the bus is crossing the student = 440 Hz

Case 2. When the bus is approaching the student = 414.9 Hz

Case 3. When the bus is moving away from the student = 468.4 Hz

Explanation:

There are 3 cases in this scenario:

Case 1. When the bus is crossing the student

Case 2. When the bus is approaching the student

Case 3. When the bus is moving away from the student

Let us explore each case:

Case 1. When the bus is crossing the student:

Student will hear the same frequency emitted by the horn that is 440 Hz.

f = 440 Hz

Case 2. When the bus is approaching the student

f = f₀ ( v / v+v₀ )

f = 440 ( 330/ 330+20 )

f = 440 ( 330/ 350 )

f = 440 ( 0.943 )

f = 414.9 Hz

Case 3. When the bus is moving away from the student

f = f₀ ( v / v+v₀ )

f = 440 ( 330/ 330-20 )

f = 440 ( 330/ 310 )

f = 440 ( 1.0645 )

f = 468.4 Hz

6 0
3 years ago
PLEASE HELP ME plsss answer this
zlopas [31]
It’s 16.25 meters per second you just add
4 0
3 years ago
You wish to place a spacecraft in a circular orbit around the earth so that its orbital speed will be 4.00×103m/s. What is this
Levart [38]

Answer:

The radius of orbit=2.49\times 10^7 m

Explanation:

We are given that

Orbital speed=4.00\times 10^3m/s

We have to find the radius of orbit of spacecraft.

We know that

Gravitational constant=6.67\times 10^{-11}m^3/kgs^2

Mass of earth=5.972\times 10^{24} kg

Orbital speed=\sqrt{\frac{GM}{r}}

Where G= Gravitational constant

M=Mass of earth

r=Radius of orbit

Substitute the values in the formula

4\times 10^3=\sqrt{\frac{6.67\times 10^{-11}\times 5.972\times 10^{24}}{r}

Squaring on both sides

16\times 10^6=\frac{6.67\times 10^{-11}\times 5.972\times 10^{24}}{r}

r=\frac{6.67\times 10^{-11}\times 5.972\times 10^{24}}{16\times 10^6}

r=2.49\times 10^7 m

Hence, the radius of orbit=2.49\times 10^7 m

7 0
4 years ago
How does water in a hot spring get hot?
OLEGan [10]
Water may come into contact with very hot rock heated by magma
4 0
2 years ago
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