103 Answered Questions for the topic kinematics

09/16/16

Uniform Circular Motion
Show that the magnitude of the velocity for an object in uniform circular motion with: x(t)=Rcos(V0*t/R) and y(t)=Rsin(V0*t/R) as position equations equals V0.   And determine the components of... more
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Kinematics

07/23/16

Kinematics question please help
A particle moves on the x axis. It starts from rest at the origin O and moves in the positive direction with constant acceleration of 2 m/s^2 until its velocity reaches 10 m/s. It then continues... more
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Kinematics

07/23/16

Kinematics question
A helicopter, initially at rest on the ground, rises vertically with constant acceleration. When it is at height of 60 m it's upward speed is 5 m/s. When it is at height of 240 m and still rising ,... more
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Kinematics

07/22/16

Kinematics question
Two particles P and Q moves in the positive direction on the x axis, P with constant acceleration 2 ms^-2 and Q with constant acceleration of 1 ms^-2. At time t=0, P is projected from the origin O... more
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Kinematics

06/03/16

Projectile motion
A projectile is launched at t=0, with velocity u at an angle theta with the horizontal. The ratio of rate of change of.speed to the radius of curvature at the point of projection is: Answer is... more
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05/25/16

Finding minimum distance between two particles ( kinematics)
A particle is dropped from the building of height 100m and another particle was projected at an angle 60° with the horizontal with intial velocity u=60m/s at the same time. Find the minimum... more
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Kinematics

05/11/16

Find acceleration in this kinematics questions
A car is travelling on a road. The maximum velocity it can attain is 24m/s and the maximum deceleration is 4m/s^2. If the car starts from rest and comes to rest after travelling 1032 m in the... more
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01/26/16

Kinematics
A particle is projected upwards from the top of a tower. Treat point of projection as origin & upwardsas positive. Consider three point on its path such that at (s represents displacement from... more
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10/19/15

Physics Help
Samantha fires a rubber band from a balcony 20m high at an angle of 30° above the horizontal. It strikes the ground 10.4s later.   a) Find the initial speed   b) Find the magnitude and... more
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Kinematics

09/23/15

How much time pases before the speeder is overtaken by the police car?
A speeder passes a parked police car at 29.0m/s. Instantaneously, the police car startsfrom rest with a uniform acceleration of 2.47m/s2. Answer in units of s
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Kinematics

09/23/15

If the brakes are applied for 2.6 s, how fast is the car going at the end of the braking period?
A car starts from rest and travels for 6.8 swith a uniform acceleration of +2.4 m/s2.The driver then applies the brakes, causing auniform deceleration of 1.3 m/s2. Answer in units of m/s
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Kinematics

09/23/15

Can this plane land at an airport where the runway is 0.85 km long?
A jet plane lands with a speed of 110 m/s andcan decelerate uniformly at a maximum rateof 5.8 m/s2 as it comes to rest. Answer in units of km.
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Kinematics

09/23/15

What is the acceleration of the sled, assuming it is constant?
A rocket-driven sled running on a straight,level track has been used to study the physiologicaleffects of large accelerations on astronauts.One such sled can attain a speed of361 m/s in 1.8 s... more
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Kinematics

09/23/15

Determine the acceleration of the object during this motion
An object moving on the x axis with a constantacceleration increases its x coordinateby 196 m in a time of 3.85 s and has a velocityof 20 m/s at the end of this time. Answer in units of m/s^2
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Kinematics

09/19/15

What is the X-component of its acceleration?
A body moving with uniform acceleration has a velocity of 17cm/s when its X coordinate is 4.62cm, its X coordinate 1.32s later is -4.38cm. Answer in units of cm/s^2.
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Kinematics

09/19/15

What is the maximum reaction time of the motorist that will allow her or him to avoid hitting the deer?
A motorist is traveling at 16m/s encounters a deer in the road 41m ahead and the maximum acceleration of the vehicle's brakes are capable of -5m/s^2. Answer in units of s.
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Kinematics

09/19/15

What is the speed of the car just as it passes the train?
A train is moving parallel and adjacent to a highway with a constant speed of 32m/s. Initially a car is 61m behind the train, traveling in the same direction as the train at 45m/s and accelerating... more
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Kinematics

07/03/15

Kinematics
A particle P moves in a straight line so that its displacement, s m, from a fixed point O , t seconds after passing through point A one the line , is given by s=t^3-3t^2-9t+30. Calculate (a) the... more
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Kinematics

07/03/15

Kinematics
A particle moves in a straight line so that , t seconds after passing through O, its velocity, v m/s , is given by v=t^2-8t+7. The particle comes to an instantaneous rest, firstly at A then at B.... more
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Kinematics

07/03/15

Kinematics
A particle P moves in a straight line so that , after t seconds, its displacement, x metres, from a fixed point O is given by the equation x=12sin(2t)-6 . Determine   (a) expressions for the... more
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Kinematics

07/03/15

Kinematics
A particle P moves in a straight line so that its displacement, s m, from a fixed point O , t seconds after passing through point A one the line , is given by s =t^2-3t^2-9t+30. Calculate    (a)... more
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04/16/15

Physics-Energy/ conservation of energy
Question: At a water park, Hugo climbs a 15.00m springboard, in 22.00s, to execute his famous THUNDER CANNON BALL. Hugo jumps up at 6.000m/s [up] off the end of the diving board and propels his... more
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Kinematics

01/21/15

Time it takes bag to reach the ground
A small bag of sand is released from an ascending hot-air balloon whose upward constant velocity is v0 = 2.05 m/s. Knowing that at the time of the release the balloon was 56.3 m above the ground,... more
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Kinematics Physics Free Fall

09/11/14

Free Fall Question
You decide to drop an apple from rest from the observation platform in the statue of liberty’s crown. The height h from which the apple is released is 44.5 meters above the shoulders of your friend... more
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Kinematics Physic

08/18/14

A body is thrown up with a velocity of 100m/s if it travels 5 m in the last seconds of its journey . If the same ball is thrown up with the initial velocity of
A body is thrown up with a velocity of 100m/s if it travels 5 m in the last seconds of its journey . If the same ball is thrown up with the initial velocity of 200m/s . What distance will it travel... more
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