3,283 Answered Questions for the topic College Algebra

#### what factor does the amount of mechanical energy stored in the spring change?

A spring is stretched by an initial amount from its relaxed state. If the spring is then stretched by three times that amount from its relaxed state, by what factor does the amount of mechanical...
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#### Compute how much kinetic energy was "lost" in this inelastic collision.

A 9,100-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 8 m/s. Compute how much kinetic energy was...
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#### What is its speed (in m/s)?

A loaded gun is dropped on a frozen lake. The gun fires, with the bullet going horizontally in one direction and the gun sliding on the ice in the other direction. The bullet's mass is 0.04 kg, and...
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#### Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters above the ground.

Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters above the ground.
The baseball was released under the influence of gravity on Earth and...
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College Algebra

19d

#### Construct a polynomial function with the following properties: fifth degree, 2 is a zero of multiplicity 4, −4 is the only other zero, leading coefficient is 2.

#### What is the acceleration experienced by passengers on this ride in g's?

The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57...
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#### 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.(a) What is the jet's acceleration when it takes off? (Give the magnitude.)(b)What is the jet's...
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#### What is the force in pounds that acts on him during the launch phase of this ride?

The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57...
more

#### 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

#### What is the force in pounds that acts on him during the launch phase of this ride?

The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57...
more

#### What is the net force on the motorcycle?

A motorcycle and rider have a total mass equal to 375 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of −6 m/s2. What is the net force on the motorcycle? (Indicate...
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#### Find the elephant's weight in newtons.

The mass of a certain elephant is 5,567 kg.Find the elephant's weight in newtons.Find its weight in pounds.

#### A child weighs 339 N. What is the child's mass in kilograms?

A child weighs 339 N. What is the child's mass in kilograms?What is the child's mass in slugs?

#### What is the acceleration of the jet in m/s2?

On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. One such catapult takes a 17,600-kg jet from 0 to 68 m/s in 2.6 s. (Assume the catapult...
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#### What is the net force on the motorcycle?

A motorcycle and rider have a total mass equal to 375 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of −6 m/s2. What is the net force on the motorcycle? (Indicate...
more

#### 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

#### Help please i cant figure this out

The height of a projectile launched upward at a speed of 20 meters/second from a height of 225 meters is given by the function h(t)=-5sup(t,2)+20t+225. How long will it take the projectile to hit...
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College Algebra

22d

#### college algebra

The length of a rectangle is 7 inches more than its width. The area of the rectangle is equal to 2 inches more than 2 times the perimeter. Find the length and width of the rectangle.

#### What is the size of the force when it is at each of the following distances from Earth's center?

A space probe is launched from Earth headed for deep space. At a distance of 10,000 miles from Earth's center, the gravitational force on it is 457 lb. What is the size of the force when it is at...
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#### 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....
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#### What speed limit should be posted for the curve so that cars can negotiate it safely?

On a highway curve with radius 44 m, the maximum force of static friction (centripetal force) that can act on a 1,373-kg car going around the curve is 8,127 N. What speed limit should be posted for...
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#### How large is the force that the catapult must exert on the jet?

On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. One such catapult takes a 17,600-kg jet from 0 to 68 m/s in 2.6 s. (Assume the catapult...
more

#### What is the acceleration of the jet in g's?

On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. One such catapult takes a 17,600-kg jet from 0 to 68 m/s in 2.6 s. (Assume the catapult...
more

#### What does the scale read?

A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W = 752 N.What is the person's mass?The elevator accelerates upward momentarily at the rate...
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College Algebra

23d

#### Percentage Help

How many liters of a 35% acid solution and a 70% acid solution must be used to produce 70 liters of a 60% acid solution?

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