Capreeca

A marathon runner runs at a steady rate of 15 km/h. When the runner is 7.5 km from the finish, a bird begins flying from the runner to the finish at 30 km/h. When the bird reaches the finish line it turns around and flies back to the runner, and then turn...

A truck travels at a constant speed of 28.0 m/s in the fast lane of a two-lane highway. It approaches a stationay car stopped at the side of the road. When the truck is still 1.2x10^2 m behind the car, the car pulls out into the slow lane with an accelera...

A pilot maintains a heading due west with an air speed of 24o km/h. After flying for 30 min, he finds himself over a town that he knows is 150 km west and 40 km south of his starting point. a) Waht is the wind velocit, in magniture and direction? b) What...

On a recent ski trup to Vermont, Mr Backman wanted to beat Mr S's ski jump recor. Mr B left the ski jump ramp with an initial velocit of 37.0 m/s and angle of 27 degrees from the horizontal. a) What is the maximum height theat Mr B reaches above the jump...

As a rocket accelerates upward, its thrust remains constant but its acceleration increases. what is the cause of this?

The force of gravity on a 2.0 kg rock is twice as great as on a 1 kg rock. Why doesnt the heavier rock fall faster?

A stone is launched upaward into the air. In addition to the force of gravity, the stone is subject to frictional forces fue to air resistance. Is the time to reach the top of its flight equal to, smaller or larger than the time to come back to its origin...

Explain a situation when the normal force is not equal to the force of gravity

An antenna loosens and becomes detached from a satellite in circular orbit around the earth. Describe the antenna's subsequent motion. If it will land on earth, describe where: if not, describe hw it would be made to land on earth.

During the war in iraq, the us military was extremely successful at detecting and striking enemy targets. many news correspondants suggested the coalition forces had a spy satellite at an altitude of only a few hundred kilometers permanently positioned 34...

Two blocks are stacked one on top of the other. The coefficient of friction between the two blocks is 0.20, and the coefficient of friction between the bottom block and the floor is 0.10. What is the max force you can apple to the bottom block such that t...

A uniform bar of iron is supported by a lon, uniform Hooke's Law spring. The spring is cut in half exactly and the two pieces are used to support the same bar. If the whole spring is stretched by 4 cm in the first bar (that is not cut in half) how much wo...

The captain of a small barge notices the front corner of the boat is on a collision course with the edge of a small pier. What could he ask the passengers to do to help him avoid a collision?

woops some spelling mistakes 240* What* velocity* magnitude*

What does photosynthesis require ? Photosynthesis requires light energy which is captured by special pigments, most notably chlorophyll. This energy is used to create energy-rich carbohydrate molecules (sugar and starch) out of carbon dioxide (CO2) and wa...

the first

-2x+7=x+1 6=3x 2=x y=2+1 y=3

Gravity

3^?=27 3^3=27 drop the bases 2x+1=3 x=2

sub in 3 for x

heres a tip on self editing your essays: always read them out lout to yourself. you will catch a bunch of mistakes and inconuities.

They were orbiting together at one point, but the antenna becomes detached. Which direction will it instantaneously head?

Well I'm not exactly sure what I think. Do you have any input?