103 Answered Questions for the topic kinematics

Kinematics Physics Energy Dynamics

07/22/20

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.
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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... more
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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... more
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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... more
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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)... more
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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.
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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.
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Kinematics Equation Graph Velocity

09/13/19

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... more
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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?
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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... more
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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... more
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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... more
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Kinematics Science Physics Equation

03/19/19

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
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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... more
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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... more
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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)
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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 
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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... more
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Kinematics

06/11/18

when we fly a drone in stationery train ,suddenly train start moving so what happen with the position of drone
 what is the position of drone if train suddenly move 
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Kinematics

05/19/18

A ball is dropped on earth in vaccum up to 2 m. If at 1 m the acceleration is 10 m/s^2. What is the acceleration at 0.5m?
A ball is thrown on earth through vaccum up to 2 m. If at 1 m the acceleration is 10 m/s^2 find the acceleration at 0.5 m?
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05/07/18

Motion in 3d - acceleration and its components
Hi   I have found the vector for the acceleration of a particle in 3d, however I have been asked now to give its component that is tangential to the trajectory of the particle. Can I get some... more
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04/02/18

If I have been given a graph of potential energy, how do I sketch typical trajectories in the phase plane?
The particle is moving in the x-axis under the action of a conservative force with a potentialenergy V (x).
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02/28/18

Significant figures
When doing kinematic equations if I have an initial velocity of 0m/s would that mean that my final answer should have 1 significant figure or would I use the 3 significant figures my other numbers... more
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11/12/17

A rock thrown horizontally at a large bell 30.0m away is heard to hit the bell after 2.50 seconds. If the speed is 300.0m/s, what is the speed of the rock?
Please show me how to solve using vav=d/t.
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11/12/17

A car travelling at 90.0km/h is 100.0m behind a truck travelling at 50.0km/h. How many seconds will it take the car to reach the truck?
Please show me how to solve using vav = d/t.
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