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Croquet balls all have a mass of 0.5kg. The green ball is moving at 12.0m/s and strikes a blue ball which is still after the collision the green ball continues to move at 2.4m/s in the same directio
A 8.4 kg mass is attached to a light cord that passes over a massless, frictionless pulley. The other end of the cord is attached to a 3.7 kg mass.
A 4.0 kilogram cart moving to the right and a 6.0 kilogram cart moving to the left on a horizontal frictionless surface. When the two carts collide they lock together.
Christian Ramirez: A small 0.12kg metal ball is tied to a very light sting 0.80m long to form a pendulum that is then set swinging by releasing the ball from rest when the string makes a 45 degree a
A 315 kg box moving at 35 m/s and strikes a 155 kg box which is at rest. if the 155 kg box travels 14 m before coming to a stop and the coefficient of friction between the box and floor is .45 what
A ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface. If coefficient of restitution is ‘e' , then find velocity after rebounce making same
The workman wants to push a box up a 20.0 degree incline. If it takes 70 Newtons of force to start the box moving, how heavy is the box?
Dan climbs a flight stairs in 1.7 min. if he weighs 480 N and the stairs is 10 m from the ground, how much power will he develop?
A car with a speed of 40 km/h approaches the bottom of an icy hill. The hill has an angle of inclination of 10.5 degrees.
The magnitude of the decelerating force equals 360 N, and the time during which the deceleration takes place is 10.0 s. What is the final speed of the man and the car?
A 5.0 kg ball is initially sitting at rest on top of a 48 meter hill. The ball is pushed with a force of 25 N for 3.0 s toward the edge of the hill. Upon reaching the edge, the ball is allowed to r
Assume that a scale is in an elevator on Earth. What force would the scale exert on a 57.6kg person on it if the elevator slows down at a rate of 1.62m/s^2 while moving downward?
Estimate the wavelength of a 20,000 Hz sound wave, which is near the upper limit of audibility for humans. Assume air at standard temperature and pressure.
A kangaroo jumps at an angle of 80° above the horizontal with a velocity of 15 m/s. If the mass of the kangaroo is 75 kg, what is its momentum in the vertical direction?
During a NASCAR race a car goes 50 m/s around a curved section of the track that has a radius of 250 M. What is the car's acceleration?No words limits.
A sphere with a 2.25 meter radius and a mass of 3.5 kilogram, rolls down the inclined plane shown. At the bottom of the incline, find rotational velocity, its linear velocity, its linear KE, abd ut
A Roller Coaster had an intial velocity of 80 m/s and abruptly came to a stop at the end of the ride. It took 10 seconds to stop. What is the acceleration?
A 20 kg rock is on the edge of a 80 m cliff. The rock falls from the cliff. What speed does the rock have as it strikes the ground?
A gun has a barrel velocity of 400 meters per second. At what angle would the gun have to be fired for the bullet to impact the ground at exactly 1000 meters from where it was fired. assume it was
A pilot can withstand ten times the acceleration due to gravity, 10 g’s, if he is wearing a special tight-fitting g-suit designed to keep the blood from rushing to his brain.
A recipe for bread states that the dough must bake for 40 minutes at a temperature of 190°C. The oven you are using has temperature markings on the dial that are in units of degrees Fahrenheit.
An average friction force of 4*10^3 N impedes the car's motion so that the car's speed at the bottom of the driveway is 3.8 meters per second. what is the length of the driveway?
A plane locked on cruise control flying due East at 300m/s, but its resultant velocity is 300.66m/s at 3.8* South of East. What is the wind speed that the plane encounters?
You kick a soccer ball 15 meters without hurting your foot much. You then pump the ball up until it is really hard (the extra air does not significantly change the ball's mass) and again kick it 15
You are to launch a rocket, from just above the ground, with one of the following initial velocity vectors: (1) V initial= 20i +70j (2)V initial= -20i + 70j (3)V initial = 20i - 70j (4) V initial =