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Svetllana [295]
3 years ago
5

if a car has a constant acceleration of 4 m/s^2, starting from rest, how fast is it traveling after 5 seconds?​

Physics
2 answers:
UkoKoshka [18]3 years ago
3 0

Answer:

20 m/s

Explanation:

Recall that one of the equations of motions can be written:

v = u + at, (also see attached for reference)

Where,

v = final speed (we are asked to find this)

u = initial speed = 0 (because it starts from rest)

t = time taken = 5s

We simply substitute the given values into the equation:

v = u + at

v = 0 + (4)(5)

v = 20 m/s

Anni [7]3 years ago
3 0

Answer:If a car has a constant acceleration of 4 m/s2, starting from rest, how far has it traveled after 5 seconds? The distance travelled in 5s.

Explanation:

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Calculate the electric field at the location of a charge if the electric force is 10 newtons and the charge on the particle is 6
kolezko [41]

I think it may be c, 1.7 v. I work with electricity a lot.


6 0
3 years ago
Can any kind soul help me​
Wittaler [7]

Answer:

2917.4 m/s

Explanation:

From the question given above, the following data were:

Gravitational acceleration of the Moon (g) = 0.25 times the gravitational acceleration of the earth

Radius (r) of the Moon = 1737 Km

Escape velocity (v) =?

Next, we shall determine the gravitational acceleration of the Moon. This can be obtained as follow:

Gravitational acceleration of the earth = 9.8 m/s²

Gravitational acceleration of the Moon (g) = 0.25 times the gravitational acceleration of the earth

= 0.25 × 9.8 = 2.45 m/s²

Next, we shall convert 1737 Km to metres (m). This can be obtained as follow:

1 Km = 1000 m

Therefore,

1737 Km = 1737 Km × 1000 m / 1 Km

1737 Km = 1737000 m

Thus, 1737 Km is equivalent to 1737000 m

Finally, we shall determine the escape velocity of the rocket as shown below:

Gravitational acceleration of the Moon (g) = 2.45 m/s²

Radius (r) of the moon = 1737000 m

Escape velocity (v) =?

v = √2gr

v = √(2 × 2.45 × 1737000)

v = √8511300

v = 2917.4 m/s

Thus, the escape velocity is 2917.4 m/s

4 0
3 years ago
What is the change in air pressure a good indicator of a change in temperature be a change in the weather I decrease in humidity
Elza [17]

Answer:

A

Explanation:

warm air rises creating low presure

cold air sinks creating high presure

so this means that temprature is realated to presure.

3 0
3 years ago
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the
Alexandra [31]

Answer:

a) \omega _1=7.56rev/s=>47.5rads/s

b) a=30.7

c) a=35.91

Explanation:

From the question we are told that:

Initial angular velocity \omega _1=7.56rev/s=>47.5rads/s

Initial Length L_1=0.600m

Final angular velocity \omega _2=6.22rev/s=39rad/s

Final Length L_2=0.900m

a)

Generally the rotation with the greater speed is

\omega _1=7.56rev/s=>47.5rads/s

b)

Generally the equation for centripetal acceleration at 8.16 is mathematically given by

a=\omega_1^2*L_1

a=8.16 rev/s*0.6

a=30.7

c)

At 6.35 rev/s

a=6.35 rev/s*0.9

a=35.91

5 0
3 years ago
What's the relationship between mass and kinetic energy
Licemer1 [7]
They have a direct relationship. As mass increases, kinetic energy increases. 
4 0
3 years ago
Read 2 more answers
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