01/19/21

find kinetic energy
When 75N of force is applied to a particular box, it will accelerate at 1.2 m/s2. This box is then loaded into a cannon and shot out. What is the kinetic energy of the box the instant it leaves the... more
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11/24/20

A driver brings a car to a full stop in 2.0 s. If the car was initially traveling at 22 m/s, how far did the car travel during breaking?
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11/20/20

the physics question confuses me
The cabin of a small freight elevator is secured to a motor by a cable and is moving upward with a constant speed. There is no contact between the cabin and the elevator shaft. Ignore air... more
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11/19/20

whats the final velocity
A ball with an initial velocity of 2 m/s rolls for a period of 3 seconds. If the ball is uniformly accelerating at a rate of 3 m/s2, what will be the ball’s final velocity?
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11/19/20

physic question
"That's one small leap for man..." In a more dramatic version of his 1969 moon landing, Neil Armstrong eschews the ladder and instead leaps from the hatch of the Lunar Excursion Module to the lunar... more
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11/18/20

Kinematics Equation 3
A car which is traveling at a velocity of 17 m/s undergoes an acceleration of 5.5 m/s^2 over a distance of 250 m. How fast is it going after that acceleration?
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11/18/20

Kinematics Equation 3
An object accelerates from rest to 95 m/s over a distance of 43 m. What acceleration did it experience?
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11/18/20

Starting from rest, a car travels 18 meters per second as it accelerates uniformly for 3.0 seconds. What is the magnitude of the car’s acceleration? *
A-18 meters per secondB-6 meters per secondC- 13 meters per second squareD-6 meters per second square
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11/17/20

physics question
As a tennis ball is struck, it departs from the racket horizontally with a speed of 28.0 m/s. The ball hits the court at a horizontal distance of 19.6 m from the racket. How far above the court is... more
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11/07/20

A woman climbs a ladder against the side of the building and wants to climb 3/4 of the way to the end of the ladder.

What is the minimum coefficient of friction needed to keep the ladder from sliding out from under her? The mass of the ladder is 14.5 kg, and its length is 7.47 m, the mass of the woman is 41.3 kg,... more
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11/06/20

How far does the jet travel during the 7 s?
A jet aircraft with a mass of 4,400 kg has an engine that exerts a force (thrust) equal to 60,200 N.What is the jet's acceleration when it takes off? (Give the magnitude.)What is the jet's speed... more
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11/06/20

A 350-N child is in a swing that is attached to a pair of ropes 1.90 m long.

Find the gravitational potential energy of the child–Earth system relative to the child's lowest position at the following times.(a) when the ropes are horizontal(b) when the ropes make... more
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11/06/20

Consider a conical pendulum with a bob of mass m = 78.0 kg on a string of length L = 10.0 m that makes an angle of 𝜃 = 2.00° with the vertical.

(Consider +î to be towards the center of the circular path and +ĵ to be upward.)(a) Determine the horizontal and vertical components of the force exerted by the string on the pendulum.(b) Determine... more
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11/06/20

What is it in g's?
A race car rounds a curve at 53 m/s. The radius of the curve is 405 m, and the car's mass is 670 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive.... more
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11/05/20

What is the object's mass?
In an experiment performed in a space station, a force of 51 N causes an object to have an acceleration equal to 6 m/s2. What is the object's mass?
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11/05/20

mass, final velocity, velocity knocked backward
Gimli throws his axe with a force of 90N and an acceleration of 1.4 m/s2 (the axe is magical and accelerates after being thrown). It has an initial velocity of 8 m/s. Two seconds later, it hits and... more
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11/05/20

A particle is moving with the given data. Find the position of the particle. a(t) = t − 4, s(0) = 5, v(0) = 2
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11/05/20

) A 12kg statue of a horse is pulled by an unknown force and undergoes an acceleration of 5m/s 2a) Calculate the force that is causing this acceleration. b) Calculate the normal force.

) A 12kg statue of a horse is pulled by an unknown force and undergoes an acceleration of 5m/s 2a) Calculate the force that is causing this acceleration. b) Calculate the normal force.
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11/05/20

Slope=-2/5 and passes through points (-10,-6) write equation in slope formula
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11/05/20

write the equation of a line that is parallel to y=0.6x+3 and that passes through the point (-3 -5)
i need the equation for the answer
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11/05/20

Physics Questions?
Which of Newton’s laws covers the concept of inertia? What kind of force prevents Newton’s First Law from appearing to be true in our daily lives? If an object is moving to the left, in which... more
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11/05/20

Mass, Volume, and Density
If the volume of an object is 5 cm3 and its mass is 55 g , what is its density?A. 11 g / cmˆ3B. 15 g / cmC. 50 cmˆ3 / gD. 275 g / cmˆ3Please help me find this answer :)
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11/05/20

Help!! A high-speed train in Japan travels a distance of 300. kilometers in 3.60 x 103 seconds. What is the average speed of this train? (Turn the time into hours by using a unit conversion)
60 min= 1hr60s= 1min
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11/05/20

Rene is playing with a large spherical rock at the edge of the cliff.
Rene is playing with a large spherical rock at the edge of the cliff.The spherical rock, which has a mass of 215 kilograms and a radius of 0.55 meters, is falling off a cliff that is 110 meters... more
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11/05/20

A spring with a force constant of 200 N/m is compressed 20cm. How fast will a 3kg box placed on the top of the compressed spring be moving when the spring returns to its resting position?
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