I was absent for about a week due to illness and now im behind my school work. I need help with the following problems. I will post the problems and please please help me. Dont give me just formulas, I need to know actually how to do the work or solve for the answer.
1. If a ball is rolling at a velocity of 1.5 m/sec and has a momentum of 10.0kg.m/sec, what is the mass of the ball?
2. What is the velocity of an object that has a mass of 2.5 kilogram and a momentum of 1000 kg.m/sec?
3. Tiger Woods hits 45.0 gram golf ball giving it a speed of 75.0m/sec. What momentum has Tiger given to the golf ball?
4. A 400 kilogram cannon fires a 10 kilogram cannonball at 20m/sec. If the cannon is on wheels at what velocity does it move backward?
5. Big Al stands on a skateboard at rest and throws a 0.5 kilogram rock at a velocity of 10.0m/sec. Big Al moves back at 0.05m/sec. What is the combined mass of Big Al and the skateboard?
6. As the boat in which he is riding approaches a dock at 3.0m/sec Jasper stands up in the boat and jumps toward the dock. Jasper applies an average force of 800 newtons on the boat for 0.30 seconds as he jumps. How much momentum does Jasper 80 kilogram body have as it lands on the deck? What is Jaspers speed on the dock?
7.Daryl the delivery guy gets out of his pizza delivery truck forgetting to set the parking brake. The 2000 kilogram truck rolls down hill reaching a speed of 30m/sec just before hitting a large oak tree. The vehicle stops 0.72 seconds after first making contact with the tree. How much momentum does the truck have just before hitting the tree? What is the average force applied by the tree?
8. Two billion people jump up in the air at the same time with an average velocity of 7.0m/sec. If the mass of an average person is 60 kilograms and mass of earth is 5.98x(10 to the 24 power) kilograms. What is the total momentum of the two billion people? What is the effect of their action on earth?
9. Tammy a lifeguard spots a swimmer struggling in the surf and jumps from her lifeguard chair to the sand beach. She makes contact with the sand at a speed of 6.00m/sec leaving an indentation in the sand 0.10 meters deep. If Tammy mass is 60. kilograms what is momentum as she first touches the sand? What is the average force applied on Tammy by the sand beach?
10. A 0.5 kilogram soccer ball is kicked with a force of 50 newtons for 0.2 seconds. The ball was at rest before the kick. What is the speed of the soccer ball after the kick?
11. A baseball player hits a 0.155 kilogram fastball traveling at 44.0m/sec into the center field at a speed of 50.0m/sec. If the impact last for 0.00450 second, with what force does he hit the baseball?
12. Tow Sawyer launches his 180 kilogram raft on the Mississippi River by pushing on it with a force of 75 newtons. How long must Tom push on the raft to accelerate it to a speed of 2.0m/sec?
1. If a ball is rolling at a velocity of 1.5 m/sec and has a momentum of 10.0kg.m/sec, what is the mass of the ball?
2. What is the velocity of an object that has a mass of 2.5 kilogram and a momentum of 1000 kg.m/sec?
3. Tiger Woods hits 45.0 gram golf ball giving it a speed of 75.0m/sec. What momentum has Tiger given to the golf ball?
4. A 400 kilogram cannon fires a 10 kilogram cannonball at 20m/sec. If the cannon is on wheels at what velocity does it move backward?
5. Big Al stands on a skateboard at rest and throws a 0.5 kilogram rock at a velocity of 10.0m/sec. Big Al moves back at 0.05m/sec. What is the combined mass of Big Al and the skateboard?
6. As the boat in which he is riding approaches a dock at 3.0m/sec Jasper stands up in the boat and jumps toward the dock. Jasper applies an average force of 800 newtons on the boat for 0.30 seconds as he jumps. How much momentum does Jasper 80 kilogram body have as it lands on the deck? What is Jaspers speed on the dock?
7.Daryl the delivery guy gets out of his pizza delivery truck forgetting to set the parking brake. The 2000 kilogram truck rolls down hill reaching a speed of 30m/sec just before hitting a large oak tree. The vehicle stops 0.72 seconds after first making contact with the tree. How much momentum does the truck have just before hitting the tree? What is the average force applied by the tree?
8. Two billion people jump up in the air at the same time with an average velocity of 7.0m/sec. If the mass of an average person is 60 kilograms and mass of earth is 5.98x(10 to the 24 power) kilograms. What is the total momentum of the two billion people? What is the effect of their action on earth?
9. Tammy a lifeguard spots a swimmer struggling in the surf and jumps from her lifeguard chair to the sand beach. She makes contact with the sand at a speed of 6.00m/sec leaving an indentation in the sand 0.10 meters deep. If Tammy mass is 60. kilograms what is momentum as she first touches the sand? What is the average force applied on Tammy by the sand beach?
10. A 0.5 kilogram soccer ball is kicked with a force of 50 newtons for 0.2 seconds. The ball was at rest before the kick. What is the speed of the soccer ball after the kick?
11. A baseball player hits a 0.155 kilogram fastball traveling at 44.0m/sec into the center field at a speed of 50.0m/sec. If the impact last for 0.00450 second, with what force does he hit the baseball?
12. Tow Sawyer launches his 180 kilogram raft on the Mississippi River by pushing on it with a force of 75 newtons. How long must Tom push on the raft to accelerate it to a speed of 2.0m/sec?