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Alchen [17]
3 years ago
15

A graph is provided below. The graph shows the speed of a car traveling

Physics
1 answer:
Elis [28]3 years ago
5 0

Answer:

Accelerating

Explanation:

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The velocity of Desmond’s car changes from 20 meters/second to 10 meters/second. The change happens in 5 seconds. What’s the acc
Sphinxa [80]
V-V₀=at
a=(V-V₀)/t
a=(10-20)/5=-2 m/s²
Acceleration of the car is -2 m/s²
8 0
3 years ago
Read 2 more answers
A simple pendulum is 3.00 m long. (a) What is the period of small oscillations for this pendulum if it is located in an elevator
aliina [53]

Answer:

a,)3.042s

b)4.173s

c)3.281s

Explanation:

For a some pendulum the period in seconds T can be calculated using below formula

T=2π√(L/G)

Where L = length of pendulum in meters

G = gravitational acceleration = 9.8 m/s²

Then we are told to calculate

(a) What is the period of small oscillations for this pendulum if it is located in an elevator accelerating upward at 3.00 m/s2?

Since oscillations for this pendulum is located in the elevator that is accelerating upward at 3.00 then

use G = 9.8 + 3.0 = 12.8 m/s²

Period T=2π√(L/G)

T= 2π√(3/12.8)

T=3.042s

b) (b) What is the period of small oscillations for this pendulum if it is located in an elevator accelerating downward at 3.00 m/s2?

G = 9.8 – 3.0 = 6.8 m/s²

T= 2π√(3/6.8)

T=4.173s

C)(c) What is the period of this pendulum if it is placed in a truck that is accelerating horizontally at 3.00 m/s2?

Net acceleration is

g'= √(g² + a²)

=√(9² + 3²)

Then period is

T=2π√(3/11)

T=3.281s

5 0
3 years ago
Which is true of Pluto?
steposvetlana [31]

Answer:d

Explanation:

Probably becuase it is further than Saturn

It takes like 70 years to go around the sun

And it is bigger than the moon

8 0
2 years ago
. A crane does 62,500 joules of work to lift a boulder a distance of 25.0 meters. How much did the boulder
ELEN [110]

Answer:

<h2>2500 N</h2>

Explanation:

The weight of the object can be found by using the formula

f =  \frac{w}{d}  \\

w is the workdone

d is the distance

From the question we have

f =  \frac{62500}{25}  \\

We have the final answer as

<h3>2500 N</h3>

Hope this helps you

3 0
3 years ago
If the pitch of the sound coming out of a speaker increases, which statement is true about the sound wave?
dimaraw [331]
As we know that the pitch of sound is directly proportional  to the frequency as the frequency increases  the pitch of sound increases and wavelength decreases
so the correct option is B
hope it helps<span />
9 0
4 years ago
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