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4 years ago

What is the term for the force exerted on an object by another object?

Physics

1 answer:

marshall27 [118]4 years ago

7 0

A: action force ... to which there is a reaction force

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A car starts from rest at a stop sign. It accelerates at 4.6 m/s^2 for 6.2 s , coasts for 2.1s , and then slows down at a rate o

ki77a [65]

Answer:

D = 271.54 m

Explanation:

given,

1. car accelerates at 4.6 m/s² for 6.2 s

2. constant speed for 2.1 s

3. slows down at 3.3 m/s²

distance travel for case 1

using equation of motion

$d_1 = u t +\dfrac{1}{2}at^2$

$d_1 =\dfrac{1}{2}\times 4.6\times 6.2^2$

d₁ = 88.41 m

case 2

constant speed for 2.1 s now, we have to find velocity

v = u + at

v = 0 + 4.6 x 6.2

v = 28.52 m/s

distance travel in case 2

d₂ = v x t

d₂ = 28.52 x 2.1 = 59.89 m

for case 3

distance travel by the car

v² = u² + 2 a s

final velocity if the car is zero

0² = 28.52² + 2 x (-3.3) x d₃

6.6 d₃ = 813.39

d₃ = 123.24 m

total distance travel by the car

D = d₁ + d₂ + d₃

D = 88.41 + 59.89 + 123.24

D = 271.54 m

5 0

3 years ago

Consider two planets in space that gravitationally attract each other if the mass of one of them stays the same and the mass of

irga5000 [103]

Answer:

D. half as much

Explanation:

let m and M be the mass of the planets and r be the distance between them.

then: the force of attraction between them is given by,

F = G×m×M/(r^2)

if we keep one mass constant and double the other and also double the distance between them.

the force of attraction becomes:

F1 = 2G×m×M/[(2×r)^2]

= 2G×m×M/[4×(r)^2]

= (1/2)G×m×M/(r^2)

= 1/2×F

therefore, when you double one mass and keep the other mass constant and double the distance between the masses you decrease the force by a factor of 1/2.

8 0

4 years ago

A student jumps off of a cliff into a river 25.9 m below. If the student landed 20.7 m horizontally away from where they jumped

lord [1]

Their probably dead but I’m not sure

6 0

3 years ago

One property that makes electromagnetic waves differ from other types of waves is that they can

Flauer [41]

travel through a vacuum at the speed of light. Other waves need a medium; sound waves need molecules that vibrate.

5 0

4 years ago

If an ocean wave passes a stationary point every 5 s and has a velocity of 10 m/s, what is the wavelength of the wave

Rainbow [258]

Answer:

As Per Provided Information

Velocity of wave v is 10m/s

These ocean wave passes a stationary point every 5 s ( It's time period)

First we calculate the frequency of ocean wave .

Using Formulae

$\blue{\boxed{\bf \: \nu = \cfrac{1}{v}}}$

here

v is the velocity of wave .

$\sf\longrightarrow \nu \: = \cfrac{1}{10} \\ \\ \\ \sf\longrightarrow \nu \: = 0.1Hz$

Now calculating the wavelength of the wave .

Using Formulae 

$\boxed{ \bf \lambda = \cfrac{v}{ \nu}}$

Substituting the value and we obtain

$\sf \longrightarrow \lambda \: = \cfrac{10}{0.1} \\ \\ \\ \sf \longrightarrow \lambda \: = \cancel\cfrac{10}{0.1} \\ \\ \\ \sf \longrightarrow \lambda \: =100m$

Therefore,

Wavelength of the wave is 100 metres.

8 0

3 years ago