frigginawesome

g(x) = 7/ 1-7x

f(x) = 5/ x+3

(-5, -7) and (-10, -14)

express in the form y=mx+b

(-3, 7); 9x=7y+8

5-1/2y = 9x

slope=

y intercept=

an object (A) of mass 0.1 kg strikes a second object (B) of mass 0.3 kg that is initially at rest. Mass A has an initial velocity of 2 + m/s.

A) assume that the collision is entirely elastic. Calculate and describe the final velocities for the two objects. Assume that this problem is entirely one dimensional.

B) Now assume that the collision is totally inelastic. Again calculate and describe the final state for these objects

C) for the inelastic collision case, calculate the total energy of the system before and after the collision. Is mechanical energy conserved in this case; if not tell why

OK

out of the my set of homework questions this is the only one kicking my butt i dont get it and the notes nor the examples help. i dont know what to do someone please help me?

these 2 are killing me can someone help please?

1.) a Hockey puck (mass mA = 0.10kg) moves along the ice in the x direction at a speed of 8.0 m/s. It strikes a second puck (mB = 0.40 kg) which is initially at rest. After the collision it is observed that puck A moves off at an angle of (theta) above the x axis while puck B moves at an angle (something like theta here) below the axis.

A) Write the equations that represnt conservation of momentum (2 components: x- and y) for this event.

B) if the final angles are measured to have the values (theta)=60.0 degrees and (something like theta symbol here)= 30.0 degrees determine the final speeds for the two pucks. Calculate the initial and final translational kinetic energry for the system

2. A mouse is riding on the rim of a 2.0 kg wagon whell that rotates freely in a horizontal plane at an angular frequency of 1.00 revs/sec. After riding there for a while, the mouse runs into the center (the axle) of the wheel. The mass of the mouse is 0.1 kg and you should assume that all of the mass of the wheel is concentrated around the rim. What is the new angular frequency when the mouse reaches the axle?

i've attempted these two so many times and i get stuck and its bugging me that its the last two in my set of 6 that i cant figure out can some pleeeaaaseee help me with them

A baseball (m= 149g) approaches a bat horizontally at a speed of 40.2 m/s (90 mi/h) and is hit straight..?

back at a speed of 45.6 m/s (102 mi/h).

If the ball is in contact with the bat for a time of 1.10 ms, what is the average force exerted on the ball by the bat?

neglect the weight of the ball since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction

strikes the wooden block of a ballistic pendulum. The block has a mass of 215 g.

(a) find the speed of the bullet-block combination immediately after the collision.

B) how high does the combination rise above its initial position?

the person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 95.0 kg. The mass of the rock is 0.300 kg. Initially the wagon is rolling forward at a speed of 0.500 m/s. Then the person throws the rock with a speed of 16.0 m/s. Both speeds are relative to the ground. Find the speed of the wagon after the rock is thrown directly forward in one case and directly backward in another.

I Am So Confused can someone please help?

Assume that in either case, the propelling force acts at an angle of 45 degrees above the ground.

Derive equations from the force needed to maintain the sled at constant speed?

which method do you think is more efficient?

Define efficient

The plane makes an angle (theta) with the horizontal.

Write equations for the net forces acting on the block. Be sure to specify your choice of coordinate system.

An older car without ABS is moving down the road at a speed, v. Ahead is an accident. The driver has two choices to stop: either lock the brakes and skid to a stop, or pump the brakes, keep the wheels rolling until coming to a stop. Which will get the car to stop more quickly? why? identify any assumptions you make in answering the question?

The speed of the ball is measured as 12.5 m/s just before it hits the ground. What was the work done against air friction during this fall?

2. The earth's moon has a radius of 1.76 x 10^6 m and a mass of 7.35 x 10^22 kg,

A) calculate the acceleration due to gravity (g) on the moon.

B) how long would it take for mass of 1 kg to fall a distance of 2m to the surface of the moon?

G= 6.673 x 10^-11 Nm^2 / kg^2

Found these physics questions on a trivia street can anyone figure them out?

at an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.2 m/s, and an 83 kg person feels a 560-N force pressing against his back. What is the radius of a chamber?

Two banked curves have the same radius. Curve A is banked at an angle of 13*, and curve B is banked at an angle of 19*. A car can travel around curve A without relying on friction at a speed of 18 m/s. At what speed can this car travel around curve B without relying on friction?

A space craft is on a journey to the moon. At what point, as measured from the center of the earth, does the gravitational force exerted on the spacecraft by the earth balance that exerted by the moon? This point lies on a line between the centers of the earth and the moon. The distance between the earth and the moon is 3.85 x 10^8 m, and the mass of the earth is 81.4 times as great as that of the moon.

Can someone please help? i've been really sick and missed two classes so i have no idea whats going on can someone please explain this question to me?

An archer stands on a cliff that is 100m high, shooting at a mark on the ground below 430m away from the bottom of the (vertical) cliff. The archer is capable of shooting an arrow with an initial speed of 35m/s at any angle you choose.

(A) if the archer shoots horizontally (at an angle of 0 degrees with respect to the horizontal), will the arrow reach the mark? why? If not will shooting at any angle above the horizontal help? why or why not?

(B) what initial speed of the arrow is needed to be in order for the arrow to reach the target mark (still with an angle of 0 degrees)?

A driver springs upward with an initial speed of 1.8 m/s from a 3.0-m board.

(A) find the velocity with which he strikes the water. [ hint: when the driver reaches the water, his displacement is y = -30 m (measured from the board), assuming that the downward direction is chosen as the negative direction.]

(B) what is the highest point he reaches above the water?

The answers that were given are

(a) - 7.9 m/s

(b) 3.2 m

BUT HOW?? can someone help please?