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2 years ago

an object starts from rest and travels 100 m in 10 s. what will be the velocity of the object after 10 s

Physics

1 answer:

astra-53 [7]2 years ago

6 0

Answer:

10m/s (if the velocity is constant!!)

Explanation:

v=Δx/Δt=100/10=10m/s (if the velocity is constant!!) (i dont know if the letters are right in english sorry)

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Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1150 kg and was approaching at

devlian [24]

Force acting during collision is internal so momentum is conserve so (initial momentum = final momentum) in both directions Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1150 kg and was approaching at 5.00 m/s due south. The second car has a mass of 750 kg and was approaching at 25.0 m/s due west. Let Vx is and Vy are final velocities of car in +x and +y direction respectively. initial momentum in +ve x (east) direction = final momentum in +ve x direction (east)

- 750*25 + 1150*0 = (750+1150)
Vx initial momentum in +ve y (north) direction = final momentum in +ve y direction (north)

750*0 - 1150*5 = (750+1150)
Vy from here you can calculate Vx and Vy so final velocity V is

V=(√V2x+V2y)

and angle make from +ve x axis is

θ=tan−1(VyVx)

 kinetic energy loss in the collision = final KE - initial KE

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2 years ago

Read 2 more answers

Describe one new piece of information that you learned about one of the featured scientist

statuscvo [17]

Answer:

Development in science:

There a number of individuals in the world around us who has improved the field of science and made it easy for us to know this universe more easily then ever. This universe is still unexplored and there are going to be more then billions of stars which are still not studied and has an immense amount of information regarding the universe.

Stephen Hawking: The scientist who made it easy for each of us to know the universe and more over the cosmos in a more detailed form, as before this no one knew about the different patterns of entities and there properties.

A genius who was handicapped:

He was a genius in cosmology, mathematics, and other subjects of science as he was diagnosed by the amyotrophic lateral sclerosis(ALS), which made it unable for him to live a normal life.But, he communicated through a computer which detected his nerve signals and shared his thoughts about any thing or subject.

Why him?

Stephen hawking was just tremendous in making it more understandable about the black holes, time worms, and space etc.As it was known to very small number of people before he took the stage.

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2 years ago

In which medium does sound travel the fastest?

Vikki [24]

1. D - sound travels the fastest through solids

2. 50 mm/s - v=fa

3. B - only process that involves changing waves

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3 years ago

A conservative force on a particle moving along the x axis is given by F = (3x^2-2x)i. Which of the following is a potential tha

ANTONII [103]

pck u

report me if you can

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2 years ago

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experi

borishaifa [10]

Complete answer

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of 0.100rad/s2. After making 2844 revolutions, its angular speed is 140rad/s

(a) What is the initial angular velocity of the turbine? (b) How much time elapses while the turbine is speeding up?

Answer:

a) 126.59 radians per second

b) 134.1 seconds

Explanation:

We can use the rotational kinematic equations for constant angular acceleration.

a) For a) let’s use:

$\omega^{2}=\omega_{0}^{2}+2\alpha\varDelta\theta$ (1)

with $\omega_{0}$ the initial angular velocity, $\omega$ the final angular velocity, $\alpha$ the angular acceleration and $\Delta \theta$ the revolutions on radians (2844 revolutions = 17869.38 radians). Solving (1) for initial velocity: