Dynamics and kinematics category

Posted by warriorsoul some time ago

What would happen if I shot a gun in space?

Posted by kimmhy020 some time ago

What is translational motion?

Posted by Anonymous some time ago

A 5.0g coin is placed 15cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of u(s)=0.80 and u(k)=0.50. The turntable very slowly speeds up to 60rpm. Does the coin slide off?

Posted by bevis21 some time ago

A toy rocket is launched upward with a net acceleration of 10m/sq.sec. for 3 sec. It then slows at the rate of 10m/sq.sec. until it reaches its maximum altitude. How high does it go?

Posted by Anonymous some time ago

In just 0.30s you compress a spring (constant 5000 n-m) which is initially at its equilibrium length by 4.0cm. What is your avg power output? looking for guidance to solve.

Posted by Anonymous some time ago

What does the term "sweep" mean in wing geometry?

Posted by Anonymous some time ago

A 20 kg child is on a swing that hangs from 3.0m long chains. What is her speed vinitial at the bottom of the arc if she swings at a 45 degree angle before reversing? Looking for guidance to solve.

Posted by homework some time ago

A vector with a magnitude of 8m/s is added to a vector with a magnitude of 5m/s. Considering all of the possible answers between the two; what are the minimun and maximum resultants?

Posted by Ion some time ago

Help with Physics The blades of a fan rotate clockwise at −225 rad/s at medium speed, and −355 rad/s at high speed. If it takes 3.05 seconds to get from medium to high speed, what is the average angular acceleration of the fan blades during this time?

Posted by mnasir some time ago

Friction between road and car tyre

Posted by Anonymous some time ago

When a 199 N bag of nails hangs motionless from a single vertical strand of rope, how much tension is exerted in the strand?

Posted by Anonymous some time ago

A fast-moving superhero in a comic book runs around a circular, 70-m-diameter track five and a half times (ending up directly opposite her starting point) in 3.0s. What is her angular speed, in rad/s?

Posted by maputla some time ago

6.7 Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.50 x 10^6 N, one 16 degrees north of west and the other 16degrees south of west,as they pull the tanker 0.65 km toward the west. What is the total work they do on d tanker

Posted by Anonymous some time ago

What is the history of kinematics?

Posted by Anonymous some time ago

How many pounds of force must a man exert on one end of an 8 foot lever to lift a 300 lb rock on the other end if the fulcrum is 1.5 feet from the rock?

Posted by watermelon5000 some time ago

The fastest recorded speed of a baseball thrown by a picter is 163.3 km/hr achieved by nolan ryan. If the baseball leaves the pitcher's hand with a horizontal velocity of this magnitude, how far will the ball have fallen vertically after 21m.

Posted by Anonymous some time ago

A car traveling at 30m/s runs out of gas while traveling at a 5 degree slope. How far will it coast before starting to roll back down?

Posted by krystal some time ago

Can an object have a value for distance and an average speed of zero? please explain why!!!

Posted by queenoffavor some time ago

Find the smallest coefficient of friction μ needed for the wall to keep the sphere from slipping.

Posted by Anonymous some time ago

The velocity of a body is graphed as a function of time. The slope of the graph at any point may be identified with:?

Posted by Ary180 some time ago

A ball is thrown vertically upwards with an initial speed of 20 m/s. What is the time taken for the ball to eturn to the thrower and what is the maximun speed reached?

Posted by Antlers some time ago

How do you find angular speed of rotation when no measure of time is given?

Posted by william schafer some time ago

How is horse power determined in a motor?

Posted by Anonymous some time ago

If you stand on a pair of bathroom scales with your weight evenly distributed between the two scales, what is the reading on each of the scales? WShat is the reading if you shift more weight on the left foot? What rule govers the readings

Posted by Anonymous some time ago

How long must a simple pendulum be if it is to make exactly one complete vibration per second?

Posted by Duval904 some time ago

An Object is moving in a straight line with constant acceleration. Initially traveling at 14 m/s. Two seconds later it is traveling at 10 m/s. How far does it travel during this time?

Posted by Anonymous some time ago

It is possible to shoot an arrow at a speed as high as 100m/s. if friction is neglected, how high would an arrow launched at this speed rise if shot straight up?

Posted by Anonymous some time ago

The motion of a very massive object is hardly affected by what would seem to be a substantial force. consider a supertanker with a mass of 3.0x10^8kg. If it is pushed by a force 5,000,000Newtons what is the magnitude of accel? Looking to know how to solve

Posted by jonnyu33 some time ago

A skateboarder, starting from rest, rolls down a 15m ramp. When she arrives at the bottom of the ramp her speed is 6.80 m/s. What is her acceleration, if the aceleration is constant?

Posted by Raziel some time ago

A box with a volume of 20m applies 12 Pa of pressure how much force does the box exert?

Posted by Anonymous some time ago

A quarterback passes the football downfield at 20m/s. It leaves his hand 1.8m above the ground and its caught by a receiver 30m away at the same height. What is the max height of the ball on its way to the reciever? Looking for explanation of how to solve

Posted by MQB some time ago

What is the difference between MKS and SI system of units and in which country the are being used?

Posted by tf1234 some time ago

A cannon elevated at 40 degrees is fired at a wall 300m away on level ground. The initial speed of the cannonball is 89m/s How long does it take for the ball to hit the wall? At what height does the ball hit the Wall?

Posted by RPD1223 some time ago

A ball is dropped from a roof and takes 3.00 seconds to reach the ground. How tall is the building?

Posted by Anonymous some time ago

An apple falls from a tree and hits the ground 14.7m below. The acceleration of gravity is 9.8m/s^2. With what speed will it hit the ground? Answer in units of m/s.

Posted by Inexorable some time ago

How can you push an object, when according to Newton's 3rd law that object will exert an equal (opposite) amount of force on you?

Posted by Anonymous some time ago

A person walks half way around the circumference of a circular path of radius 5.00m. A) Find the magnitude of the displacement vector. B) How far did the person walk? C) What is the magnitude of the displacement if the circle is completed?

Posted by Owner of the GD Universe some time ago

At what speed does a crack travel when a drinking glass gets broken?

Posted by DeEd18 some time ago

A 5.4 kg bag of grocieries is in equilibrium on an incline of angle theta=15 degrees. Find the magnitude of the normal force on the bag.

Posted by Anonymous some time ago

A 100g ball on a 60-cm-long string is swung in a vertical circle about 200cm above floor. the string breaks when its parallel to the ground and the ball is moving upward. It reaches a height of 600cm. what is the string tension right before it broke?

Posted by evilboieric some time ago

A golfer hits a golf ball at an angle of 25 degrees to the ground. If the golf ball covers a horizontal distance of 301.5m, what is the ball's maximum height? (At the top of its flight, the balls vertical velocity component will be zero.)

Posted by Anonymous some time ago

Does a car driving around a curve at a constant speed on a flat road have a constant velocity?

Posted by Dialach some time ago

Negating the impracticality of the scenario, what would happen if an unstoppable force collided with an immovable object?

Posted by Scott D - ex-QnA some time ago

Which will bounce higher: a ball of glass or a ball of rubber?

Posted by some time ago

What is centrifugal force?

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