85 Answered Questions for the topic kinematics

#### Angular Kinematics

Hello, I am struggling in my science class and I'm not sure how to do the unit we are on so I was wondering if someone could give me the answers and how to solve them so I can do better. Thank you!...
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#### Angular Kinematics

Hello, I am struggling in my science class and I'm not sure how to do the unit we are on so I was wondering if someone could give me the answers and how to solve them so I can do better. Thank you!...
more

Kinematics Physics

10/26/20

#### A car is driving at 25 m/s when the driver sees a sign indicating the speed limit has dropped to 15 m/s. It takes the car 4 seconds to slow down to the correct speed. What was the car's acceleration?

Hint: A formula is needed.

10/15/20

#### 1-D Kinematics of Particles

Particle 𝐴, which is initially at rest, wants to meet Particle 𝐵, however they are 𝑋𝑌𝑍 ft away from one another. The motion of particle 𝐴 heading toward 𝐵 is defined by the relation: 𝑠 = 1/𝑎2 where...
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Kinematics Physics

09/22/20

#### Kinematics Equation

A ball rolling down a hill was displace 5 m while uniformly accelerating from rest. If the final velocity was 20 m/s. What was the rate of acceleration?Your answer

08/15/20

#### Falling and bouncing ball problem

I have this interesting physics problem I can't solve. Could you please explain it in simple terms?A small ball thrown vertically down from height of 4,9 m with initial speed of 9,8 m/s hit a...
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#### Physics Energy Question

A 5.0 kg crate is pushed across a horizontal surface by a 60.0 N force directed 32°C below the horizontal. Determine the work done on the crate by this force after the crate moves 8.0 m.

07/07/20

#### How far will the cheetah need to run to catch the horse?

A horse runs by a cheetah at a top speed of 21 m/s. A cheetah notices the horse and stands up after 1 s. The cheetah then immediately speeds up with a constant acceleration of 9 m/s2 to catch the...
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Kinematics

04/23/20

#### Will the driver get wet?

1. A convertible with its top down drives towards the entrance of an underground garage at a velocity of 24 km/h. A window cleaner directly above the entrance drops a bucket of water. If the...
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Kinematics Physics

04/22/20

#### Kinematics Question

A parachutist jumps from a height of 3.1 x103 m and free-falls for 10 s. She then opens her parachute and for the next 20 s slows down with an acceleration of -4.5 m/s2. After that she falls the...
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Kinematics Physics

04/13/20

#### Kinematics gives a different answer?.

An object starts rotating 200° in 5 seconds,finding angular acceleration, two methods i have tried:ω=Δθ/Δt=200°/5=40deg/s,a=Δω/Δt=40/5=8deg/s^2Second method:Δθ=1/2(ωi+ωf)Δt, 200°=(1/2)...
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Kinematics Physics

11/30/19

#### In physics, how do you create a velocity time graph from a position time graph?

I need to know just how to do it, whether if its using a formula or changing something. This is basic physics, so no calculus involved.

Kinematics Physics

09/22/19

#### A ball is thrown upward.What is its maximum height? Its initial vertical speed is 11.6 m/s and the acceleration of gravity is 9.8 m/s 2 . Neglect air resistance. Answer in units of m.

#### Kinematics problem for an object

While solving kinematics problem for the motion of an object, a student obtained thefollowing result: a = k –bv, where, a is acceleration, v is speed and k and b are positiveconstant. Given that at...
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Kinematics Physics

08/01/19

#### Please help me solve the second distance.

A drag racer can reach a speed of 53m/s over a distance of 120m. Over what distance can iy reach a speed of 85m/s?

07/21/19

#### Has a body angular momentum and torque only in a circular path?

In different contexts, my book(**Principles of Physics** by Resnick, Halliday ,Walker) , they wrote
> For torque, the path need no longer be a circle and we must write the torque as a vector...
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06/15/19

#### what is the initial speed of the ball when it is projected into the air

A small ball is projected vertically upwards from a height of 3 meters above the groundThe ball hits the ground 2 seconds laterIf air resistance is negligible and the acceleration due to gravity is...
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04/22/19

#### Compute the acceleration of the two cars after collision

Car A was stopped when Car B hit Car A from behind
The two cars lock together and skid for 10 m before coming to a rest
The mass of Car A is 1800kg and the mass of Car B is 1200kg
The coefficient...
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#### Kinematics - Using equations

A bicycle travelling at 5ms^-1 undergoes uniform acceleration and travels a distance of 600m in 20s.Calculate:a) accelerationb) velocity at the end of 20s

Kinematics Physics

03/16/19

#### Two Toy Cars Are Rolling On Adjacent Straight Tracks

At t = 0, one toy car is set rolling on a straight track with initial position 14.0 cm, initial velocity −3.3 cm/s, and constant acceleration 2.70 cm/s2. At the same moment, another toy car is set...
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Kinematics Physics

10/11/18

#### Kinematics Question

Two stones are released simultaneously: one at the top of a building and the other at the base of the building. The height of the building is 21 metres. The stone at the top of the building is...
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Kinematics

08/19/18

#### motion of a particle is x=(6t-3)(t^2+1) where x is in meters and t is in seconds. what is the instantaneous velocity of the particle at time equals 3 seconds

the motion of the particle is given by x=(6t-3)(t^2+1)

Kinematics

07/19/18

#### A man goes from A to B at 40 km/ hr speed and returns from B to A at 60 km/ hr speed . Find average speed??

I’m getting confused

Kinematics

07/02/18

#### Deceleration to equal position and velocity

Hi guys!I have a interesting math problem and I am by no means a math expert!
So if i have one vehicle traveling at 120 km/h or 33.333 m/s, and another vehicle traveling at 84 km/h or 23.333 m/s...
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