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Rina8888 [55]
3 years ago
5

If average acceleration is calculated using the equation, “change in velocity / change in time,” what is an objects acceleration

if it’s velocity is 24cm/s at 3s? Be sure to include units in yours math work and in your final answer.
Physics
1 answer:
harina [27]3 years ago
7 0

Answer:

Acceleration of object=8cm/s^{2}

Explanation:

Given:-

Velocity (v)=24 cm/s

Time (t)=3 s

To calculate acceleration (a) of object=?

Now,

acceleration =\frac{velocity}{time}

a=\frac{v}{t}

a=\frac{24}{3}

a=8 cm/s^{2}

Therefore object acceleration =8cm/s^{2}

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A red 120 kg bumper car moving at 4 m/s collides with a green 100 kg bumper car moving at 3 m/s. The red bumper car bounces off
Mariulka [41]
We can utilize the equation pi=pf (p=momentum). because p=mv, we can sub in the initial masses and velocities as well as the finals in order to form an equation. this results in 120(4)+100(3)=120(2)+100x. this can be simplified to 540=100x, or x=5.4 m/s.
6 0
3 years ago
A roller skate coming to a stop because of
Elden [556K]

Answer:

Laws of the Park: Newton's First Law

If you understand how a skateboard starts and stops, then you already know something about Newton's first law of motion. This law was developed by English scientist Isaac Newton around 1700.

Explanation:

Hope this helps..

8 0
3 years ago
A ball is kicked from the ground into the air at a velocity of 3 m/s at an angle 35° above the horizontal and hits the ground so
Dennis_Churaev [7]

Answer:2.45 m/s

Explanation:

Given

Launch velocity(u)=3 m/s

launch angle=35^{\circ}

as the vertical velocity first decreasing to zero and then increases to original value so its avg is zero .

v_{avg}=\frac{displacement}{time}

v_{avg}=\frac{Range}{time}

v_{avg}=\frac{u\cos \theta \times t}{t}

thus v_{avg}=\frac{3\cos 35\times t}{t}

v_{avg}=3\cos 35=2.45 m/s

8 0
3 years ago
What type of pipe wrenches are designed for turning and holding where marring is not objectionable?
galina1969 [7]
The type of pipe wrenches which are designed to turn and hold where marring is not objectionable is known as the chain wrench.<span> It has two serrated which adjust and grip the pipe. </span>
5 0
4 years ago
A mailman performed 588J of work lifting a box 1.4 m. How much force did the mailman use?
lord [1]

As we know that work done due a force F is given by formula

W = F.d

here F = applied force due to which work is done

d = displacement of object

now here we will have

W = 588 J

d = 1.4 m

now we can find force by above formula

588 = F* 1.4

F =\frac{588}{1.4}

F = 420 N

So applied force by milkman is F = 420 N

7 0
3 years ago
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