i love physics!!?

Question

haha. i love physics.. NOT! anyway, can you give me examples of each problems:

1) velocity problems
2) speed problems
3) acceleration problems
4) power problems
5) work problems

please and thank you :)
oh, please be sure that the problems you'll give is the ones that we DO/EXPERIENCE EVERYDAY.

the longer problems but simple answer will have the 10 points :)

Answer 1

1) velocity... how fast one can go on a road before getting a ticket?
2) speed... what did the radar gun show?
3) acceleration... how fast can my car do 0-60?
4) power... how much hp my engine needs to be able to do 0-60 in 4 sec?
5) work... how much work did my nitro-injected truck do in pulling that tractor 300 feet?

Answer 2

VELOCITY PROBLEMS
1. What is the speed of a truck that travels 10. km in 10. minutes?
2. What distance is traveled by a police car that moves at a constant speed of 1.5 km/minute for 5.0 minutes?

3. What distance would be covered in 10. minutes by a train that travels at a constant speed of 500. meters every 10. seconds?
4.What is the average speed of a commercial jet that travels from New York to Los Angeles (4800 km) in 6.00 hours?
5.Convert your answer in problem #4 to m/s.
6.A car is traveling at an average speed of 70. m/s. How many km would the car travel in 6.5 hours?

Acceleration Problems



1. An ice cream truck is moving along at 20 m/s (its initial velocity.) It then speeds up (accelerates) for 5 seconds at 8 m/s2. What distance would the truck travel in this time interval?



2. What velocity would be attained by rolling ball which is accelerated at 0.30 m/s2 over a distance of 50. m. The starting velocity was 0.50 m/s and the force that caused the acceleration was applied for 5.0 seconds.



3. If a calculator falls off the side of student desk and hits the floor 0.39 seconds later, how tall is the desk and how fast would the calculator be traveling when it hits the floor?



4. If a rocket in space is moving at a constant velocity of 9.8 m/s and then uses its propulsion system to accelerate to 10. m/s during a 3.0 minute burn, what would be the acceleration of the rocket?



*5. A car, initially traveling with a uniform velocity, accelerates at a rate of 1.0 m/s2 for a period of 12 seconds. If the car traveled 190 m during this 12 second period, what was the velocity of the car when it started to accelerate?



*6. A ball rolls down an inclined plane with a constant acceleration of 2.5 m/s2:

a) how fast is the ball traveling after 3 seconds?

b) how far has the ball traveled in those 3 seconds?

c) how far has the ball traveled by the time its velocity is 15 m/s?



*7. If you travel one mile at a speed of 1000 mi/h and another mile at 1 mi/h, what is your average speed?



**8. A pedestrian is running at his maximum speed of 6.0 m/s to catch a bus stopped by a traffic light. When he is 25 meters away from the bus the light changes and the bus accelerates uniformly at 1.0 m/s2. Find either; how far he has to run to catch the bus, or his frustration distance (closest approach). You may use graphs, charts, appropriate equations, tables, and/or computers.

Hope this helps!

Answer 3

I hate physics

Answer 4

Suppose you're in car. Before reaching highway see your watch and drive your car in a fixed speed like 80kmph and after 48 min 30 seconds you had to stop your car. What is the distance during this time? We don't need any ghost to ask. just calculate it.

s = ut + at*2/2

s=v+at

F=ma

W=FScos (cone)

V=s/t